You'll need a set of these shortened hex head grip screws (4 of each) to go along with a set of Challis hex drive Slim grip screw bushings when you install slim grips on your 1911. This set of 4 screws is Stainless Steel and includes allen wrench
HD-300-S-TS Slim Carry Groove grips for full size 1911 frames
Sear Spring
HD-317 Slim Line hex head grip screws, 4 PK, blue
Challis hex drive grip screw bushing, set of 4, blued. Includes 4) bushing o-rings and 8) grip o-rings FOR SLIM GRIPS
For Hex Head Grip Screws