Easy to install: the chain joints are made of velcro, easy to disassemble and clean, reusable Strong tensile: made from the special steel, repetitive forging, strict quality control, ensuring strength and resistance. Lubricant and fluid: polishing the surface, injecting the oil inside. Precise adaptation: the professional test spacing of the equipment, the data following the test of professional techniques. Durable: anti-rust and anti-corrosion. Through multiple forgings and hardening in an oil bath and subsequent treatment in a salt bath, we achieve a tensile load of 950 kg with our special steel! The chain can be quickly shortened at the connections and easily connected to the included spring element. Confirm length Compare the new bicycle chain with the old one and confirm the length of the new chain. Install on a bike Install a new chain of a confirmed length on the bike. Connect chain Use a magic clasp to connect the chains and turn the sprocket to confirm the chain is firmly attached.