Click to expand Tap to zoom 08B20H-SB Metric Sprocket 20 Tooth 12MM Stock Bore For 08B British Standard Chains Sale $46.50 SKU 08B20H-SB 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Metric Sprocket for British Standard Chain 08B20H Stock Bore - No Keyway / Set Screw PD: 81.18mm Bore: 12mm Hub Dia.: 67mm Hub LTB: 28mm