Our 0.50 inch (1/2) automatic coil springs are designed to replace many popular automatic switchblade knives from today's popular knife manufacturers. Some of these include Combat Elite TAS Autos, Benchmade, Boker, Dalton, S&W, Microtech, Paragon, Pro-Tech and other frame coil fired switchblade knives. Our automatic coil springs are used by custom knife makers all over the world, where performance and reliability are a must.

Our MEGA Torque coil is the strongest automatic knife coil spring on the market today. Designed to deliver the highest torque in the industry, you'll find this model has no equal in providing the "snap" to even the longest blades or oldest actions. This spring is the King of Hardcore Opening Action!

MEGA Torque
Coil Diameter 0.50"
Stack Height 0.172"
Wire Diameter 0.043"
Important Note! ****

**** Please note that this spring may not work as a direct replacement for many automatic knives on the market today, especially on those where stack clearance is an issue. Designed with custom knives in mind, modification of the coil cavity depth may be necessary for the MEGA Torque Coil spring to fit correctly in an existing knife. Please measure your coil clearance depth before ordering.

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(Please measure your spring size in inches before ordering. A rule of thumb is to measure the center of the pivot to the spring tip hole in the blade and double it for the correct coil diameter, in inches)