Union B1-K21 C-Series Cruiser Padlock. 

The UNION B-1K21 C-Series Cruiser Padlock is a tough padlock for use in security applications. 

Formerly known as the Chubb Cruiser, these locks are still made in the UK to exacting standards.

5-lever mechanism, non-key retaining. Anti saw, anti pick, force and torque attack resistant.

Dimensions (H/W/D): 98.5 x 74 x 27mm.
Shackle Diameter: 12.5mm.
Shackle Clearance: 17mm.