MUQZI Single Speed Conversion Kit Single Speed Cassette Cog 12T 13T 14T 15T 16T 17T MTB Freewheel Bike Sprocket Click the link to view 18T/19T/20T/21T/22T Click the link to view Single Speed Chain Tensioner Click the link to view Double Pulley Chain Tensioner MUQZI Single Disc Cassette Features: The flywheel is made of high-resistant stainless steel, whose strength and hardness are twice that of ordinary 316 stainless steel, and the hardness reaches 18 degrees. The screws are made of stainless steel, anti-corrosion and anti-rust, suitable for long-term outdoor riding. The compression piece and gasket are made of 6061 aluminum alloy, which is ultra-light and corrosion-resistant, maintaining strength and reducing weight. Tips: This flywheel is compatible with 7-10 speed cassette flywheel Hub Body , please choose 7-10 chain to install the chain. Installation skills: The angle between the chain presser and the lower forklift frame is less than or equal to 45 degrees to maximize the tension force to ensure the normal operation of the flywheel without slippage. product information Specification: 12T 13T 14T 15T 16T 17T Material: aluminum alloy + stainless steel Color: black/red/gold/silver Delivery details: 1 flywheel + 5 tower base gaskets + flywheel cover Processing technology: CNC cutting / anode coloring. 304 Stainless SteelMeasured With a HardnessTester You Can Clearly Show That The 304 Stainless SteelHardness Of15 Degrees H316 stainless steel: measured with a hardness tester, you can clearly see that the hardness of H316 exceeds 18 degrees, which is stronger and better than ordinary 304 stainless steel. Strong Anti-Stress Sturdy And Durable CNC Cutting, Smooth And Beautiful Surface Smooth Edges, High Finish, Flat And Bright The Flywheel Is Made Of High-Resistant Stainless Steel, Whose Strength And Hardness Are Twice That Of Ordinary 316 Stainless Steel, And The Hardness Reaches 18 Degrees. The Screws Are Made Of Stainless Steel, Anti-Corrosion And Anti-Rust, Suitable For Long-Term Outdoor Riding. Please Pay Attention To Disassemble The Chain Buckle And Adjust It To The Appropriate Chain Length