This Master Lock padlock features a 20mm wide aluminium body for corrosion resistance. The 3mm diameter shackle is 11mm long and made of steel, offering more strength and can fit most luggage zips. It has a 3-pin cylinder and comes with 2 keys. This is a set of 2 keyed alike padlocks. The padlock is 20mm wide with an aluminium body and open shackle.