Roller Chain, Chain Construction Riveted Pin, Material Steel, Chain Overall Width 21/64 in, Chain Number 25, Roller Diameter 1/8 in, Pitch 1/4 in, Link Type Offset, Number of Strands 1, Application Mechanical Drives, Pin Outside Diameter 3/32 in, Plate Height 5/16 in, 21/64 in, Plate Thickness 1/32 in, Standards ANSI B29.1, DIN8196, JIS1801