Different size M6 hex standoff: 10mm 15mm 20mm 30mm 40mm to meet your needs Material: Stainless steel. Corrosion and rust resistance, strong and durable Easy to install. Hexagonal design allows tightening with a wrench Applications: Great for the industries of communication, office equipment, electronics, etc Package includes: 10pcs M6 male-female spacers, 2 per size.Manufacturer: Young Wolf10 Pcs Single Head Stud Hex Standoff Spacers Male to Female Thread 10mm 15mm 20mm 30mm 40mm M6 x M6 for PCB Hexagonal Fasteners Hardware Accessories 304 Stainless Steel