Ultimate Arms Gear Number Combination Secure Steel & Zinc Bodied Firearm Guns Protective Safety Trigger Block Locks Fits All Ruger Models Frames Series Pistol Handgun Revolver Rifle Shotgun Ultimate Arms Gear Secure Trigger Lock Is Universally Designed to Fit Most Handguns, Rifles, and Shotguns. Securely Locks Trigger To Prevent Use; Requires Just 1/2" Clearance Between Trigger & Trigger Guard. For Superior Durability and Security It Is Constructed of Hardened Steel and Zinc While It Is Fitted with Innovative Rubber Pads to Shield the Firearm from Scratching or Marring Whatsoever. When It Comes To Preventing Unauthorized Use Of Your Firearm, Ultimate Arms Gear Is The Choice for an Affordable, Simple, and Safe Solution. Non-Rust Zinc Alloy Pin, All Metal Housing & Mechanism; 2-1/2 x 1-1/2", Weight 7 oz. Custom-Set your Own 3-Digit Lock Code, Easy to Attach/Remove, Simple to Store When Not In Use.