• M6 single-head hexagonal spacers, male to female, in five sizes: 10 mm, 15 mm, 20 mm, 30 mm, and 40 mm • Made of 304 stainless steel, providing high resistance to corrosion and rust, as well as great durability • Hexagonal design allows for easy tightening with a wrench, making installation easier • Suitable for use in communication industries, office equipment, electronics, and other hardware applications • The package contains 10 male-female spacers, distributed as 2 units per size