Checkers CH4121 8 CH3 Wheel Chock Rubber, 55 in Max Compatible Wheel Dia, 10,000 lb Vehicle Wt Max, 2 Chocks, 1 PR G5179361 Logo Identification Security Seal Primary Logo Identification Security Seal Primary Material Polyethylene Primary Color Blue Breaking Strength 75 lb Security Seal Marking Type Hot Stamp Tool Required Not Required Number of Digits 7 Thickness 1 4 in Imprinting 1 Line of 12 Characters Item Strap Seals Color Blue Material Polyethylene Primary Application Tamper Indication VOF is a screw coupling series in carbon steel typically used in oil and gas applications 000 lb Primary Wheel Chock Application General Purpose Standards OSHA 1910 Wheel Chock Style Double with Rope or Chain Includes 3 ft Chain Material Rubber Color Black Wheel Chock Surface Tread Grooved Wheel Chock Base Tread Grooved Wheel Chock Material Rubber Max