Xena X2 Disc Lock XENAs strongest alarm-less disc-lock. The X2s chunky build and 14mm (1/2in.) carbide-reinforced, hardened-steel double-locking pin is a solid option for your motorcycle or larger scooter. The X Series unique V-shaped design makes life difficult for thieves by presenting the attacker with two cut points. Fits most larger bikes High-Grade Steel Body