Allen key Hex doubel end , based on super stainless steel 304 material , with ... on super stainless steel 304 material , with exceptional property. Allen key Desription : Hex shape with stainless steel 304 or 316 material , "L ... properties . Stanard : be suitable for non-standard and stanards Specification : Hex: 1.5, 2, 2,5, 3, 4, 5, 6, 8 ...