We custom milled these replacement arm module outer sleeves from 7075 military grade aluminum. It threads onto the arm module inner sleeve of your Fender System 1 tremolo and secures the assembly from unscrewing from the tremolo body and also holds the ball bearing and retainer ring (sold separately) which allows the arm to snap into place.

Fits only the Fender Contemporary System 1 tremolo found on Made in Japan (MIJ) Stratocasters, Telecasters and Squires that were made between 1985 and 1987.

Weight: 0.128 oz
Units in box: 1
Parts by Make/Model > Fender Parts > System 1 - Japan