MMA Silver Knuckles Pin MMA Silver Knuckles Pin measures 1.5x1 inch. MANUFACTURED By Ivamis Trading. Please note the size, this product is a PIN for your clothing, it will not fit your hands! This is a Pin and not a Weapon. It is way too small in size to be used as a weapon. It's for decorative purposes only for your clothing Includes 2 butterfly clutches to attach it to your clothing. The Pin Features Nail Backing Lead Free