ACS PAWS 4.1 Freewheel Gear Size:18T 2mm post fits most pro

2mm post fits most pro (and larger) aluminum frames

MATERIAL: U

The Box One 3/32" CNC Alloy 7075 Cog-Black/Silver is designed to fit Shimano compatible cassette hubs

DRIVER: 6 pawl aluminum race driver

HOLE COUNT: 28 hole or 36 hole

ACS PAWS 4.1 Freewheel Gear Size:18T 2mm post fits most proThe ACS PAWS 4. 1 Freewheel at J&R Bicycles is not just a step up in quality it also hits that sweet spot between excellent durability and affordability. These are the same design as Paws and use a standard 4 prong removal tool. Paws 4. 1 freewheels are upgraded with a black center ring and nickel plated sprocket ring. Available in 16, 17, 18, 20 and 22 teeth. Compatible with all 3 32 and 1 8 chains.