Roller chain tools 1, the standard roller chain drive with jis and ansi specifications are based on a common roller chain drive. 2, plate chain (al type, bl-type) is the chain of down and suspended that composed of plates and pin . 3, stainless steel chain can be used in the special environment such as pharmaceuticals, water and high temperature. 4, rust-proof nickel-plated chain 5, standard attached annex chain is in the annex to the standard transmission roller chain . Wooden case
