Universal type fitting. 30 blade set. 6 Sizes. 4 x wood blade: SU101B, SU101D, SU111C and SU144D. 2 x metal blade: SU118A and SU118G. Use wood blades on hard/soft wood, blockboard, laminated fibre wood boards, plastic and plywood. Use metal blades on ferrous metal and non-ferrous metal, aluminium and sheet metal.