Specifications: Lighter than Brute Mini but with the secure advantages of X4P Locking Mechanism (both sides of U are locked), the OnGuard Pitbull Mini U-Lock is perfect for fast commuters or bike messengers who are weight sensitive. Shackle Dimensions: 90mm x 140mm (W x H x Diam) (3.55" x 5.52") x 14mm (0.55") D.
Additional Features: 5 laser cut keys (1 micro-light and 4 extra grip keys) Micro-light key projects a bright white beam, Snap Lock Quick Release multi-position mounting bracket.