• carbon steel, aluminum alloy
• Folding -- electroplated carbon steel tool head, foldable design, easier to repair
• Bike -- a great for your friend and family.
• Multi socket wrench screwdriver-- split panel design, each one can be opened separately
• Mechanic repair tool-- includes screw driver, wrench and chain regulator.
• Chain repair kit-- sturdy and durable, high hardness, easier for repairing.