Master Lock 643D 1.56 in. Aluminum Luggage Combination Lock The Master Lock 643D Set Your Own Combination Padlock features a 1-9/16in 40mm wide metal body for durability. The 1/4in 6mm diameter shackle is 7/8in 22mm long and made of nickel plated steel, offering resistance to cutting and sawing. The 4 dial combination security offers keyless convenience. The Limited Lifetime. The Master Lock 643D is a resettable 4-digit combination padlock. Body width: 1-9/16" 40mm, Shackle: 1/4", Vertical clearance: 7/8", Horizontal clearance: 1". Resettable to over 10,000 personalized combinations. PADLOCK APPLICATION: For indoor use; Lock is best used for cabinets and school, employee, athletic, and indoor storage lockers EASE OF USE: Resettable 4 dial numeric combination for keyless convenience, set and reset your combination allowing thousands of personalized combination code options DURABLE DESIGN: Padlock includes a solid metal body in a brushed aluminum finish; Nickel plated steel shackle for cut resistance SPECIFICATIONS: 1-9/16 in. wide lock body; 1/4 in. diameter shackle with 7/8 in. length, 7/8 in. width; Number Dials