Set come with 8 Pack 1/4”-28x7/8” Hex (Allen) Head Screws and 8 pack Star Lock Washers. Designed for a new build or as a replacement for that frustrating OEM flat head or slot-head screw. Compatible with A2 and most of aftermarket grips. Grip Screw: 1/4”-28 TPI threads, only 7/8” threaded length because you don't need the full 1" length of the standard screw, 3/16” Hex Socket Drive. Quality machined from 435 Alloy Steel, Black Oxide Coated. Lock Washer: 18-8 Stainless Steel External Tooth Lock Washer for 1/4-28 bolt. Use our new Star Lock Washer to help you lock the Grip Screw in place securely. Installation Tips: Recommend install with an Oil-Based Lubricant. Dry Install Not Recommended Set come with 8 Pack 1/4”-28x7/8” Hex (Allen) Head Screws and 8 pack Star Lock Washers. Designed for a new build or as a replacement for that frustrating OEM flat head or slot-head screw.