Description: Effortless Compatibility and Upgrade: The 36T Ratchet is specifically designed for DT - Ratchet / hub systems, ensuring compatibility with models like DT180 and DT240. Featuring an M30x1.0 ratchet tooth pattern identical to the DT hubs, it allows users to easily measure and match, making installation easyMaterial: Crafted from alloy steel, this Bicycle Hub Star Ratchet is wear resistance and high strength, capable of handling various challenging riding conditions. Its strong construction ensures long term performance, providing a reliable support for your cycling adventuresFeatures: With a 10 engagement angle design, this Bike Hub Service Kit ensures sensitive power transmission that quickly converts pedaling into forward motion. The response enhances your riding experience by delivering smoother and more efficient ridesPackage Included: The package includes 2 star shaped ratchets, a helical return spring, and a gasketComprehensive Dimensions: The large ratchet measures 0.35inch in height with an outer diameter of 1.18inch and an inner diameter of 1.00inch; the small ratchet is 0.24inch high with an outer diameter of 1.08inch and an inner diameter of 0.94inch; the spring width is 0.94inch; spacer width 1.02inchensuring accurate fitment across compatible systems Specification: Large ratchet height 9mm/0.35inchOuter ring diameter 3cm/1.18inchInner ring diameter 2.55cm/1.00inchSmall ratchet height 6mm/0.24inchOuter ring diameter 2.75cm/1.08inchInner ring diameter 2.38cm/0.94inchSpring width 2.38cm/0.94inchGasket width 2.6cm/1.02inch Package Includes: 2 ratchets1 spring1 gasket Note: Please allow slightly errors due to manual measurement and different monitors.