Product Description Specifications GP310 Caliper Sprocket Brake Bracket Spacer. Engineered from high strength aluminum alloy and chrome plated for corrosion resistance. Dimensions: .386 ID, .875” OD and 2.00” length. Category: Brakes, Rotors & Pads>Brake Hardware Clearance Item: N Core: N LTL: N MPN: 300-10413 Proposition 65: N Special Order: Y