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 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 Chainring Material: Steel Outer Diameter: Approx. 140mm / 5.5in Inner Diameter: Approx. 110mm / 4.3in Package List: 1 x Cycle Chainring Note: Manual measurement, please allow some errors.