Iron body with brass cylinder. Hardened steel shackle. Multi-pin tumbler mechanism. Includes 3 steel keys. Horizontal x vertical shackle clearance: MSS03I: 20x23mm; MSS04I: 26x26mm; MSS05I: 31x33mm. Shackle dia: MSS03I: 6mm, MSS04I: 8.5mm, MSS05I: 9.5mm. Iron body with brass cylinder. Hardened steel shackle. Multi-pin tumbler mechanism. Includes 3 steel keys. Horizontal x vertical shackle clearance: MSS03I: 20x23mm; MSS04I: 26x26mm; MSS05I: 31x33mm. Shackle dia: MSS03I: 6mm, MSS04I: 8.5mm, MSS05I: 9.5mm.