Mouse over to zoom in

L-shape Piano Tuner Spanner Guzheng Square Shape Tip Tuning Hammer Wrench Tuner Spanner

L-shape Piano Tuner Spanner Guzheng Square Shape Tip Tuning Hammer Wrench Tuner Spanner

Price on the app only:

Already have TOMTOP APP

Scan the product's code to buy directly!

Note: Please update TOMTOP App to the latest version.

Don't have TOMTOP APP

Download freely and enjoy extra offers!

Ship From:
  • China Warehouse
  • United States Warehouse
Please select a warehouse
Usually will be shipped in business days hours
The request failed! Please try again.
Sorry, it seems that there are no available shipping methods for your location.Please contact us for further assistance.


Ship to

United States
Stock in: china

Special discount has ended

Please note each user for only 1 item(s)

Preorder Add To Cart Out of Stock

Arrival Notice

if the goods arrival in 90 days,we will inform you by email!


Arrival Notice

Notification Subscription Success!

if the goods arrival in 90 days,we will inform you by email!

Notification Subscription Failed!

Error appeared,Please try again later!

Arrival Notice
Add to Favorites


L-shape design, easy to use it.
Small and exquisite, convenient to carry it. 
Specially designed for tuning guzheng and most machine devices that have quadrilateral openings. 
The metal shaft is made of hard steel, abrasion resistance.

Note: Please measure the tip size of your device before purchasing, make sure the size of your devices match with the wrench quadrilateral. 

Material: Engineering plastics & Steel
Inner bore size: Approx. 0.65cm / 0.26in
Overall Length: Approx. 16cm / 6.3in
Handle Length: Approx. 10.5cm / 4.13in
Weight: 78g / 2.74oz

Package includes:
1 * Square Shape Piano Tuner Spanner

Customer Reviews

Average Rating:


based on 32 Customer Reviews

  • 5 stars
  • 4 stars
  • 3 stars
  • 2 stars
  • 1 stars

Share your thoughts with other customers and get Tomtop Points, the first 5 reviews get DOUBLE Tomtop Points!

Write a Customer Review
  • By myfavoritemisskate

    September 19, 2017

    It did a good job tuning the strings to themselves on my piano which had a some strings that were out of whack. It easily tuned the strings that had dropped out of tune and if I got a little sharp it allowed me to loosen the string and try it again. The Square end fit tightly on the square pegs and did not have any play in it. I have yet to tune my piano with a tuner because it wasn't that far out and I didn't have that much time on the day I got it so I can't comment on how durable it is in the long run yet...the fake wood (plastic) handle didn't feel like it was going to break at any point. It has been worth the money I paid for it just getting it back in tune with itself. I will update my review if I find the quality to be poor when I redo the whole piano to a tuner but otherwise you can assume it still works good. At this time I'm happy, -M-

    Is this helpful? (0) (0)

  • By Jason W Morrison

    September 3, 2017

    I was very apprehensive about trying to tune my Hinze piano myself. I've heard intimidating stories (from professional tuners) of how you should always call a professional, because this is just too big of a job for a mere piano player. But, recently the piano fell so far out of tune as to be unplayable and I was left with the choice of spending significant money on a tuning job, or doing it myself. So, I ordered this wrench (because it looked stronger than some of the others), and gave it a go. Armed with a chromatic tuner (which I already had) and the wrench, I started with middle C (which was way off) and had it on pitch in no time. The wrench worked fine. It seems sturdy. However, it was much smaller than I expected. It takes a lot of strength to tighten the strings and a little more leverage would have helped me control the adjustment better. That's why I give it only 4 stars. Otherwise, I'm quite happy with the purchase. Tuning is easy - tuning really well is not. It takes time to tune over 200 strings, and as the overall tension changes, I have had to revisit some of the strings I've already tuned. My tuner doesn't pick up the low frequencies well, so I'm tuning the lowest strings by ear which is much more difficult. Also, I can't really stretch the octaves across all 88 keys so that they sound perfect. I'll probably have the piano professionally tuned at some point, but I'm very happy

    Is this helpful? (0) (0)

  • By Santiago Piñeros

    September 23, 2017

    Quite small and makes it hard to reach the point one wants when tuning

    Is this helpful? (0) (0)

  • By Matt Petschel

    September 22, 2017

    I used it to take out a couple hundred pins in a piano and it held together. You are getting what you pay for it has a plastic handle and the pins get stuck in it but it is cheap and gets the job done.

    Is this helpful? (0) (0)

  • By goldenskyhook

    September 18, 2017

    Granted this is the cheapest one offered by Tomtop, so no complaints. If I had it to do over, I would have spent a bit more for a wrench with a longer handle, a tighter fit, and a star (asterisk) shaped hole. It's a little harder to get the wrench at the correct angle with only 4 contact surfaces. Still, it works fine.

    Is this helpful? (0) (0)

  • By Josh Bartels

    September 16, 2017

    This has a metal socket and neck, with a plastic handle. Simply does what it is supposed to do. When tuning a piano, a lot of the difficulty comes in how tight/old the pegs are, not on how expensive the wrench is. I was able to fine tune an old upright with no problem, and also take strings completely off with little effort, but again, this will vary by piano.

    Is this helpful? (0) (0)

  • By DeAthWaGer

    September 14, 2017

    Works great, but I wish it were just slightly longer to give more torque. I have a very old piano and have to micro-tap this thing with one hand while turning it with the other to get small adjustments of around 3-5 cents. I'm sure with another 1.5-2 inches extra on the handle I could get it down to 1 cent. I'm tempted to take it to the saw and weld it onto a bigger rod.

    Is this helpful? (0) (0)

  • By mom2boys

    September 7, 2017

    This worked for what we needed it for, but if you're going to use it alot, I wouldn't waste your money on this one. We used it to take apart an old piano.

    Is this helpful? (0) (0)

  • By William Farrell

    September 2, 2017

    Plastic Handle versus Wood

    Is this helpful? (0) (0)

  • By James

    August 24, 2017


    Is this helpful? (0) (0)

  • By jimsan

    August 20, 2017

    This tuning hammer, together with the mute kit and the Olympus L-12 recorder with tuner, all helped me in tuning my daughter's piano and will probably keep helping me in the future.

    Is this helpful? (0) (0)

  • By c***5

    June 1, 2017

    Excellent Seller, Prompt Shipping, Quality Product, A++++

    Is this helpful? (0) (0)

  • By k***3

    April 22, 2017

    A+A+A+ Great doing business! Thank you!

    Is this helpful? (0) (0)

  • By a***l

    September 24, 2015

    Great transaction. Thanks! A++++++

    Is this helpful? (0) (0)

  • By e***1

    March 23, 2015

    God Bless You!! Perfect transaction..Honest and trustworthy seller. AAAAAAAAA+

    Is this helpful? (0) (0)

  • By d***e

    February 15, 2015


    Is this helpful? (0) (0)

  • By j***a

    January 31, 2015


    Is this helpful? (0) (0)

  • By r***5

    January 27, 2015

    Item just as described. Thank you.

    Is this helpful? (0) (0)

  • By b***2

    January 2, 2015

    Smooth transaction... Fast Shipping... A++ E-seller... Thanks so much

    Is this helpful? (0) (0)

  • By g***k

    December 11, 2014

    Excellent communication, honest, would be happy to buy from again

    Is this helpful? (0) (0)

Hot Event More

Top Sellers More

Please activate your account first. We will resend the activation email to help you complete your registration.

Recently Viewed