To fit 36 tooth chainring. Compatible with 104BCD, 4-bolt. Used with plenty of life in it. Some scratches and bashes as seen on photos.
Shimano 104BCD Bash Guard Rock Solid High Impact PolyResin
MRP bash guard Rock Ring 4 Hole 104BCD 168mm O.D. Sku5534
Vintage Rock Ring Bash Guard Chain Guard VF Tech Pat Pend 90s MTB 110BCD
GEBHARDT ROCK RING CLASSIC CYCLOCROSS BASH GUARD, 130 & 135BCD
Rock Ring Bash Guard Chainring Protector 110BCD Turquoise Blue Ano 48T
