A spacer is a fastener that is used to create a space between two objects, often to position them correctly. In the world of electronic components and electronic hardware, spacers are commonly used to space circuit boards, panels, doors, or gears. Both female-to-female and male-to-female spacers are included in this set of different sizes. & nbsp; Brass Spacer Bolt Kit includes Hex Spacers, Bolts, Nuts, Screws, Applied many areas assembled, responding to the problem; different needs. & nbsp; Specification: Materials: Brass Quantity: 120pcs Box size: 12.8 x 6.5 x 2.2cm / 5.04 x 2.56 x 0.86 “Type Size Quantity: : M & acirc; le-Female M3 (5 mm + 6 mm) 10 M & acirc; le-Female M3 (10 mm + 6 mm) 10 M & acirc; le-Female M3 (15 mm + 6 mm) 10 M & acirc; le-Female M3 ( 20 mm + 6 mm) 10 Female-Female M3 (5 mm) 10 Female-Female M3 (10 mm) 10 Female-Female M3 (15 mm) 10 Female-Female M3 (20 mm) 10 & nbsp; 20 & times; M3 Screw 20 & times; M3 & Eacute; nuts 1 & times; Plastic box & nbsp; Please