Kryptonite KryptoFlex 525 Double Loop Bicycle Security Bike Cable (5mm, 2.5-Feet) Perfect for quick release seat and seatpost component and accessory lock-up such as helmets when used with another Kryptonite lock 5mmBRAIDED STEEL CABLE DOUBLE LOOPED CABLEfor use with all Kryptonite U-locks, disc locks and padlocks Protective vinyl cover Product dimensions: 3/16 (5mm) cable diameter, 2.5 (76cm) cable length Product weight: 0.15 lbs (0.07 kgs)