Single-speed tape type:Multi-speed wheels can be converted to single-speed wheels. The flywheel is made of high-strength stainless steel, the 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 pressing sheet and gasket are made of aluminum alloy, which is ultra-light and corrosion-resistant, maintains strength and reduces weight.Single speed tensioner:Single-speed gears are allowed to run on the bicycle. The chain tensioner is directly installed on your derailleur hanger, which can convert any multi-speed bicycle into a single-speed bicycle for use on the rack, providing a simple, effective and adjustable tensioning single-speed system The way.Installation skills: The angle between the chain presser and the lower forklift frame is less than or equal to 45 degrees to maximize the pulling force and ensure that the flywheel does not slip off the gear to operate normally.size:98.3x65.7x26.6MM Material:Aluminum alloy + stainless steelcolour:GoldPackage Contents:1 x bike flywheel1 x bike flywheel cover1 x chain press5 x tower base gasket1 x wrenchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.