Thumbs 1
Thumbs 1


Part# 12-21110


The Sidewinder Speedwrench specialty tool was developed to counter the frustrations of using standard socket wrenches especially in applications where excessive repetitions are required to install or remove long bolts; or where there is not enough resistance involved to allow the ratchet to function; or where there is not enough working space for efficient use of the standard ratchet wrench. The sidewinder can cut work time in half for professional mechanics and aircraft builders. Now being used by major racing teams, the Sidewinder is a revolutionary addition to every tool box.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


Ordering was fast and easy. Tool is very handy. Thanks

Gustavo A
June 3, 2019

The outboard upper wing attach nuts on a Cozy aircraft are very hard to set in place and get started, this tool solved the problem for me.

A. J
July 23, 2018

Exactly matches OEM wrenches needed for our patches units and less than 1/2 the price.

July 6, 2018

Awesome Tool! Saved me $400.00

Jim F
September 11, 2017

Very handy tool.

April 2, 2018

I received this order and it was not exactly as advertised, the picture of the products you see are definitely NOT what you get. The red handle on it is not a T like the other ones are. I wanted a set of all 3, 1/2 3/8 and 1/4 drive, all exactly the same, but they are not.

March 14, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the ft. lbs. rating of the 3/8 drive sidewinder speed wrench? Part # 12-21100

Per the supplier: 175 ft. lbs.

Q: What is the overall length of the 1/4, 3/8 & 1/2 sidewinder speed wrenches?

The lengths are as follows: 1/4 is approx. 10-1/4" L, 3/8 is approx. 12" L, and the 1/2 is approx. 12" L.

Q: Where are the Sidewinder Speed Wrenches made?

Made in Taiwan.

Q: What is the thickness of the drive head below the square drive nipple on the 1/4 Sidewinder? (Trying to determine what is the smallest hole it can be inserted into.)

1" thickness, the head diameter is 1-5/16".

View in Catalog

View Image View in Catalog