Shimano Freehub Spoke Protector 26-30 tooth, 4 hook, 32 hole clear plastic

Keeps the chain from being shifted into the spokes when out of adjustment
32 Hole
26-30 Hole

CP-FH35 32H 26-30T 4 PRONG SPOKE PROTECTOR
Assists in keeping the chain from being shifted into the spokes while out of adjustment
32 Hollow
26-30 Hollow
4 Prong
For cassette freehubs