Kryptonite KryptoLok combination U-Lock provides 6 out of 10 protection on Kryptonite's security rating scale. A 4-digit, resettable combination allows the protection of a U-Lock with the convenience of not having to carry keys. Included FlexFrame bracket carrys the lock securely during transport. - Double Deadbolt - Strongest Combination U-Lock on the market - 12.7mm shackle - Durable easy to use dials - Includes FlexFrame bracket - same as keyed U-locks - Rotating dust cover - Easy to use 4 digit reset mechanism - Protective vinyl coating - Combo Safe Program - Product dimensions: 4" x 9" (10.2cm x 22.9cm) - Product weight: 2.9 lbs (1.32 kgs)