Gebhardt Alloy Chainring Bolts.
Chainring Bolts from Gebhardt
Made of aluminum, polished
Stamped logo
Two lengths to choose from
9mm for 2x or 1x chainring chainring + 1x rock ring
15mm for 3x or 1x chainring chainring + 2x rock ring (inside and outside)
When 15mm variant may need chainring shims (Art. 36102 ) are mounted between the outer rock ring and the outer chainring, otherwise the rock-ring does not have to Abstandtand chainring