Thule 450400 One-Key System 4 Pack,Silver/Black

Set of 4 Locks: All keyed alike
2 Keys Included: Two keys that open all locks in the set
Compatibility: Fits various Thule products, making it versatile for different applications.
Weight About 0.5 kg (1.1 lbs)?
Dimensions 14 x 9 x 5 cm (5.5 x 3.5 x 2 in)?