Type B DUPLEX
D40B20H-PB Duplex Sprocket Plain Bore 5/8" for #40 duplex chain
What stands out about the BOXER Tools model is its quiet click when engaging the lock.
D40B24H-PB Duplex Sprocket Plain Bore 5/8" for #40 Duplex Chain
You will find that the black color makes the product look slimmer and more streamlined.