HIGH COMPATIBILITY- Suitable for 6/7/8 speed bicycle chain, 1/2"x3/32" ;Compatible for racing bike,road bike, mountain bike. High Strength-The bike chain is made of special forged steel, with a tensile strength exceeding 820 kgf, ensuring high strength. Smooth lubrication-The surface of the bike chain is polished, and the inside is oiled to provide corrosion and rust protection; the double X bridge design makes the shifting speed fast and stable. COMPACT & PORTABLE- This bike chain is in compact design and box package is portable for carrying to anywhere anytime. EASY TO USE- Chain joints for the magic buckle, easy to remove or install the bike link.Just line everything up properly and push the pin out and remove link, then put the chain back together, line it all up and turn the sprocket to confirm the chainis firmly attached. Colour Name:6/7/8 Speed HIGH STRENGTH Special forging steel,tensile strength over 820 kgf to ensure the high strength;Suitable for 6/7/8 speed bicycle chain, 1/2"x3/32".