The Abus 430 170HB Ultimate D-Lock 230mm is a Sold Secure Gold rated lock. The Super Ultimate is urban level security in a high-tech minimalist design. The Super Ultimate uses a 14mm temper hardened steel round shackle. The shackle extends completely through the lock body providing even greater protection against torsion/twisting attacks and the shackle double bolts in the lock body.The Super Ultimate features an innovative soft touch cover that protects your frame and, like all ABUS locks, feature industry-leading corrosion resistance. The bright yellow lock body gives it a visible and distinctive look.