McMaster 98338A654 Zinc Plated Carbon Steel Cotter Pin, 1 2" Dia × 4" Long, Pack of 10 36LP58 Unbreakable Handle Technology Handle Color Unbreakable Handle Technology Handle Color Black Tether Style Standard Tool (Accessory Needed for Tethering) Striking Surface Hardness 30 HRC Face Material Drop Forged Steel Dead Blow Hammer No Hammer Type Sledge Hammer Double Faced Yes Face Shape Round Tether Ready Yes Grip Style Textured Grip Material Rubber Replaceable Handle No Series B 500 Degrees F Silicone Free No Biodegradable Non Biodegradable Chlorinated Non Chlorinated Non Chlorinated Glove Liner Material Flannel Series 6797R EN 388 Impact Rated No Dual Layer Yes Glove Insulation Material Cotton Low Profile Impact Protection No Brand and Series Showa 6797R Thickness Heavy Weight Anti Static No Surface Resistivity Not Tested Min Repeated bending will weaken the pin they're not ideal for wet environments