Material: The derailleur tool is made of good quality ABS, durable, also suitable for SRA M 11-speed derailleur tools.Dimensions (L x W x H): about 11.2 x 5.3 x 1 cm .Features: Sram GA P chain small in size and sturdy, can be used as a travel kit, and can solve most bicycle problems. Suitable for all kinds of car models, it is simply the perfect tool.Tools: SRA M derailleur alignment tool for adjusting the derailleur, simple to use, easy to use, and high quality appearance for more convenience for your bike. The SRA M chain tool is particularly suitable as a gift for others. Small size and beautiful appearance. It is the best gift for yourself, your family or your friends. Convenience: The rear derailleur adjuster is small and sturdy, can be used as travel equipment, and can solve most bicycle problems. It is a perfect tool for adjusting the rear derailleur, suitable for different car models. Note: The data are all manual measurement, please allow 1-3cm error, due to the Light and display difference, there will be some color difference, depending on the physical object received.