Hardware #40 Roller Chain Offset 1/2" Half Link 5/16" Pitch Slide Gate Operators Roller Chain Offset 1/2" Half Link 5/16" Pitch Slide Gate Operators Pitch on this link is: 1/2 inch. Roller diameter is: .312 Inside Measurement: 5/16 inch. Pin Diameter is : .156 Tensile Strength: 4000 lbs