Click to expand Tap to zoom 06B40H-SB Metric Sprocket 40 Tooth 16MM Stock Bore For 06B British Standard Chains Sale $60.75 SKU 06B40H-SB 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Metric Sprocket for British Standard Chain 06B40H Stock Bore - No Keyway / Set Screw PD: 121.4mm Bore: 16mm Hub Dia.: 70mm Hub LTB: 30mm