Features1COMPATIBLE MODELS: Cycle chainring fits for TONGSHENG TSDZ 2 TSDZ 2B mid drive motor, fine workmanship, precise sizes, to ensure fit installation, stable and reliable use. 2THICKENED ACCURACY TEETH: Round cycle chainring adopts thickened teeth with accuracy tooth design, which enhances the load bearing capacity, strong and sturdy, long service life. 3LOW NOISE: 34T cycle chainring with standard teeth design ensures chain retention, prolongs wear life, reduces friction and noise, provides better riding experience. 4STEEL MATERIAL: This cycle chainwheel is made of steel material, high strength and not easy to deform. Compact and lightweight, will not add extra riding burden. 5EASY TO INSTALL: The cycling chain wheel is a practical cycling lithium conversion accessory, easy to install and use, and can be ly adapted to fixing patterns.SpecificationItem Type: Cycle ChainringMaterial: SteelOuter Diameter: Approx. 140mm / 5.5inInner Diameter: Approx. 110mm / 4.3inPackage List1 xCycleChainring