Metric 12B A1 Attachment Connecting Link 10B Chain Sprockets the 12B A1 attachment has

the 12B A1 attachment has a bent tab on one side with one hole for mounting

Additionally this bushing features a 13/16" bore with a standard keyway

Dimension (B): 3

This 140C35 sprocket is a durable

Dimension (d1): 10mm

Metric 12B A1 Attachment Connecting Link 10B Chain Sprockets the 12B A1 attachment hasOur superior 12B A1 attachment connecting link is designed explicitly for metric 19. 05mm pitch 12B chain and conforms to ISO and DIN dimensional standards for direct interchangeability. Each precision component of this 12B A1 attachment is made from top quality carbon steel that has been heat treated for extended working life and durability. We supply this attachment as a standard connecting link (master link) or assembled onto the 12B roller chain