Demolition X Markit Cranks! Built with Dennis Enarson’s signature Rig cranks. Complete with full heat treated arms that are ridged for extra strength and stiffness. Larger 24mm/ 48 splined heat treated hollow spindle for even greater prevention from twisting and breaking to make the Rig cranks one of the stiffest and sturdiest cranks out there. Complete with 3/8” ratchet spindle bolts for added convenience. All that and they’re backed with a LIFETIME WARRANTY!