Convenience and security of Bull Dog Combo STD with included 4 foot fully coated, braided steel cable for more locking options. Shackle Dimensions: 115mm x 230mm (W x H x Diam) (4.53″ x 9.06″) x 13mm (0.51″) D Cable Dimensions: 120cm x 10mm (4 x 0.39″). The best-selling Bulldog combo series u-locks offer the same level of security as Bulldog keyed locks, but with the convenience of not having to carry a key.