PRO SHOP CHAIN EXTRACTOR 62M1, 12 SPEEDS - Perfect for 5, 6,7, 8, 9, 10, 11 and 12-speed chains - For Shimano compatible HG/UG/IG chains - The thumb-lid isolates the finger from the greasy chain while locates the chain at the right position - Product Dimensions : 20.4 x 7.9 x 3.4cm - Connecting rivet pilot pin breaker included - Weight : 0.375kg - Material : Cr-Mo Steel