Description PAIR OF CHAIN ADJUSTING BLOCKS (AS USED ON ALLOY SWINGING ARMS) THE AXLE HOLE ON THESE IS 15mm. CHECK YOUR BIKE PRIOR TO PURCHASE AS SOME BIKES USE 12mm. ORDER BEFORE 12 MIDDAY ON MONDAYS OR AFTER BANK HOLIDAYS, 2PM TUESDAY TO FRIDAY FOR SAME DAY DISPATCH. WE ONLY DISPATCH ORDERS MONDAY TO FRIDAY. If you have any questions, please call us on 01789766777. Phone opening hours 10am-2pm Monday to Friday
