Specifications: Material: S304 stainless steel Size: 2-3/4 in body width, 3/8 in diameter shackle Weight: 250g /per unit (0.55 lbs) Scope of Application: Outdoor gates, warehouses, logistics, doors, windows, storage, etc. How to set your combination code? Step 1 - Turn dials to original 0-0-0-0, and push the switch to open the lock beam. Step 2 - On the back of the lock, use a clip or screw driver to turn the screw from A to B anticlockwise. Step 3 - Set your new password, and turn the screw from B to A, your password is set successfully.