Clean, tough, and simple Tighten up with a 6mm Allen key. Features a 6mm Allen key on the drive side of the axle if you manage to round the non drive side Constructed from 7075 aluminum and made to manufacturer's exact specifications Fits: Spire Alloy 2021 – 2023, Spire Carbon 2021 – 2023, Relay Carbon 2023, Patrol Alloy 2021 – 2023, Patrol Carbon 2022 – 2023, Repeater 2022 – 2023, Sentinel Alloy 2021 – 2023, Scout Alloy 2021 – 2023, Smuggler Alloy 2023, Smuggler Carbon 2023