Puts an end to scratched and marred screw heads on 1911 Auto pistols. Machined and hardened screws use an Allen head socket to prevent the wrench from slipping and making your "masterpiece" look less-than-perfect. Mfg: Brownells SPECS: Steel, heat treated. .150"-50 x .250". Available blued (BLU) or stainless steel (S/S). Sold in single and multiple paks of 4 screws, each pak contains one wrench.