Description: This is an essential tool to have for anyone working on their own machine. It is specially designed to quickly and accurately remove and install chain pins. It can help you remove chains and extra links, and save your effort. You no longer need to exert tremendous force to remove the chain pins of your bike. Specifications: Material: Metal Color: Black Rod 1 Length: 16cm / 6.3" Rod 2 Length: 13.2cm / 5.2" Height: 10cm / 3.94" Fits Chain Sizes: 415,420, 428, 520, 525, 530 Package Weight: 343g Instructions: 1. Fit the Chain Breaker on the chain, making sure that the tip of punch 1 is perfectly centered on the head of the chain pin to be disassembled. 2. Place 3 on the inner roller. 3. Actuate punch 1 by rotating rod 2 and push the chain pin head out of its plate. 4. Repeat the operations on the second pin of the link to be disassembled. Package Included: 1 x Chain Cutter Breaker Tool Note: 1. Please be sure to verify that the push pin is aligned properly with the chain pin. 2. Please allow a 1-3cm error due to manual measurement. Thanks for your understanding.