The Squire CP40/2.5 Combination Padlock 4-Wheel 40mm Extra Long Shackle 63mm has a 4-wheel re-codeable combination offering upto 10,000 combinations and is supplied with code changing instructions inside the pack. Squire Security Rating 5 (Based on a Rating of 1-15). Specification Body Width: 40.0mm.Body Thickness: 22.0mm.Shackle Diameter: 6mm.Vertical Shackle Clearance: 63.5mm.Horizontal Shackle Clearance: 17mm.