20B-1 Steel roller chain, sold per metre.
Typical specification:
Pitch P: 1 1/4"
Roller Diameter A: 19.05mm
Width between inner plates B: 19.56mm
Pin diameter C: 10.19mm
Pin Length D: 41.3mm
Link Pin Length E: 45mm
Inner plate height F: 26.4mm
Plate thickness g/G: 4.5/3.5
Minimum tensile strength: 95kN
Average tensile strength: 106.7kN