Feature:1. COMPATIBLE MODELS: Cycle chainring fits for TONGSHENG TSDZ 2 TSDZ 2B mid drive motor, fine workmanship, precise sizes, to ensure perfect fit installation, stable and reliable use.2. THICKENED ACCURACY TEETH: Round cycle chainring adopts thickened teeth with accuracy tooth design, which enhances the load bearing capacity, strong and sturdy, long service life.3. LOW NOISE: 34T cycle chainring with standard teeth design ensures chain retention, prolongs wear life, reduces friction and noise, provides better riding experience.4. STEEL MATERIAL: This cycle chainwheel is made of premium steel material, high strength and not easy to deform. Compact and lightweight, will not add extra riding burden.5. EASY TO INSTALL: The cycling chain wheel is a practical cycling lithium conversion accessory, easy to install and use, and can be perfectly adapted to fixing patterns.Specification:Item Type: Cycle ChainringMaterial: SteelOuter Diameter: Approx. 140mm / 5.5inInner Diameter: Approx. 110mm / 4.3inPackage List:1 x Cycle ChainringNote:Manual measurement, please allow some errors.