Specifications: 1) Weight: 132±5g 2) External diameter of friction surface: Φ104 3) Hole diameter: Φ8 4) Thickness of pin hole: 16.0mm 5) Rubber and cork based friction materials, according to Chinese standard of wet friction material (non-metallic) GB138296-92 a) Wet: u≥0.18 b) Dry: u≥0.50 Inner packing: 200pcs/box 28.5kg/box Outer packing: Dimensions: 40cm x 30cm x 10cm