* Ergonomic shape with robust 40 x 14mm cross-section denies bolt cutters* Colorful coating prevents frame scratching* Single-latch, hinged closure and patented hidden-key entry resists even sophisticated attack* Inside shackle dimensions 2-3/4'' x 6'' / 72 x 151mm, outside dimensions 4'' x 7-1/4'' / 105 x187mm* Includes patented mounting bracket for secure and convenient storage on seatpost when riding* City Lock uses the same key as other Pinhead locks so you can now lock up your frame, wheels, and seatpost with a single security system