The Wheels Manufacturing 386 EVO Adapter for 22/24mm Spindle Cranks adapts SRAM/Truvativ cranks to 386EVO-standard frames. Simply tap the adapters into the 6806 bearing in the BB shell or cups, then install the cranks using the included spacers to adjust chainline or to take up any side-to-side movement in the crank. – Machined engineering-grade Delrin – 48g/pr Includes – (1) – 24mm ID adapter (for right-side) – (1) – 22mm ID adapter (for left-side) – (8) – 0.7mm spacers