White Industries Eno Freewheel

SPECS:
INTERNALS: Sealed cartridge bearings, 36T engagement system
USES: Freewheel for threaded hubs.
HUB FIT: Fits large side of Flip-flop hub
CHAIN FIT:  3/32" chains recommended (1/8" will work as well)
TOOL: 4-prong Shimano freewheel tool (ACS Claw, Park or Shimano)

MATERIAL: Case hardened, electroless nickel plated outer gear case

Weight:
16T: 5.7oz/162g
17T: 6.05oz/173g
18T: 6.4oz/183g