Enduro CO MR 18307 18mm x 30mm x 7mm Hub Bearing - 18mm - 30mm - 7mm - ABEC-5 Ceramic Radial Bearing - Black Oxide YGroup_7033816252461 Cons: Maybe not required for

Cons: Maybe not required for the average at home mechanic as you will probably only use 1-2 of them

Materials: The SpankHex Gravel is a CNC Optimised forged aluminium body

Cleat interface: Comes with XPEDO XPT cleats (6° Float) with a retention adjustable interface

and 6mm Allen keys

Enduro CO MR 18307 18mm x 30mm x 7mm Hub Bearing - 18mm - 30mm - 7mm - ABEC-5 Ceramic Radial Bearing - Black Oxide YGroup_7033816252461 Cons: Maybe not required forCO MR 18307LB Enduro Zero, Black Oxide, Ceramic Hybrid, ABEC 5, radial Bearing (C3 clearance) 18 x 30 x 7mm Enduro Zero, Ceramic Hybrid, ABEC 5, radial bearing featuring black oxide treated 52100 high Carbon Chromium alloy races paired with Grade 5 Silicon Nitride Ceramic balls, with dual lip labyrinth (LLB) seals to withstand the outside elements and to contain the 90% fill Mobilux NGLI 2 high pressure water proof synthetic grease. Si3N4 ceramic