Double Pitch Conveyor Chain with Extended Pins Model:A2040, A2050, A2060, A2080, C208A,C208AL, ... reasonable tolerance range.2.Tensile strength:15-20% higher than the standard3.Certificate of Quality: ISO 9001:2000,SGS 4.Centreless ... .Color:self,dark yellow,dark blue,black7.All attachments are the standard sizes. Double Pitch Conveyor Chain with Extended Pins