Suitable for locking storage rooms, gates, doors, boats and trailer. The shackle height options are 25mm and 50mm. The diameter of the shackle is 10mm. The body of the padlock is made of brass and the shackle material is a surface hardened boron steel. The surface treatment of the body and shackle is bright chrome. This product has ABLOY PROTEC -lock system. ABLOY PROTEC is a factory level lock system which is recognized as the premium high security mechanical lock system available, and is used extensively by private, commercial and government end users who demand the ultimate in high security master lock systems. ABLOY PROTEC is distributed through a highly restricted dealer network. The ABLOY PROTEC dealer network is made up of locksmiths who represent the highest level of professionalism and ethics in the industry.