Demolition x Markit Cranks! Ridden by the heaviest hitters in Bmx with no cracks or breaks EVER! 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 Markit cranks one of the stiffest and sturdiest cranks out there. Complete with laser etched 3/8” ratchet spindle bolts for added convenience. All that and they’re backed with a LIFETIME WARRANTY!