ITEM NAME:Nut Splitter 9mm - 12mm Capacity Nuts Spliter Breaker Description: - Anti-corrosion finish - Forged steel - Hardened - Heavy Duty - Perfect for ensuring the safe removal of corroded or damaged nuts without damaging bolt threads. Specification: - Material: 45# Steel - Color: Silver - Size: Approx. 8x 1.2x 1cm/ 3.15x 0.47x 0.39inch - (Sizes are the diameter of the hole in the nut splitter) - 1#: 5/16“-1/2'' 9-12mm Nut Splitter. Requires 12mm Spanner to tighten. Package Included: 1 Piece Nut Splitter Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test..1#: 5/16“-1/2" 9-12mm Nut Splitter. Requires 12mm Spanner to tighten. 1 Piece Nut Splitter. - Size: Approx. The color may have different as the difference display, pls understand. - Anti-corrosion finish.