- Round spacers made of high-quality ABS, ideal for electronic and DIY applications - Includes 100 units with precise measurements: 4.2mm inner diameter, 7mm outer diameter, and 10mm height - Provide excellent electrical insulation and maintain constant height on PCB boards - ABS material: does not rust, is less brittle than metal, stable and reusable - Specially designed to prevent bending, twisting, and short circuits in printed circuits - Compatible with M4 screws, suitable for computers, 3D printers, power outlets, and more - Versatile solution for component mounting, hardware, and advanced electronics projects