Made of high quality, temper hardened steel the Ultimate 420 has a slightly narrower inner width and lock body than the beefier Super Ultimate. The 13mm shackle double bolts into the lock body for robust protection against cutting and torsion attacks 13mm hardened steel round shackle Pass through, double bolting steel shackle provides anti-twist protection Shackle, lock body and supporting elements made of special temper hardened steel ABUS Premium Cylinder offers great protection against picking Two keys and bike-mount USH bracket supplied with the lock Security Rating: 12 of 15 Cable Included: Yes Shackle Width: 4 Width: 80 Length: 9 Diameter: 13 Lock Style: Keyed Weight: 3.17lbs