Conveyor Roller Chain Pitch Size (p) : 2 Roller Diameter (d1 max) : 0.625 Inch Width Between Inner Plates (b1 min) : 0.620 Inch Pin Diameter (d2 max) : 0.312 Inch Pin Length (L max) : 1.287 Inch Pin Length (Lc max) : 1.437 Inch