Made famous on Kickstarter.com - Magnetic Quick Release keychain. ***Actual product/color/finish/appearance may vary from batch to batch. Can be used for just about anything. Use as a standard magnet or just as a way to hang your keys on something metal. Updated to now include TK logo, revised design, and key ring. Specifications: Brass Weight: 0.3 oz Copper Weight: 0.3 oz Plastic Weight: 0.1 oz Size: .740" Long (connected), 0.375" Diameter Material: Copper, Brass, or Plastic Magnet Pull: 5 lbs according to magnet manufacturer. Tactical Keychains LLC shall not be liable for any damages that may be incurred with the use of this product.