Features: Quality material: round spacer ABS material, hard texture, excellent temperature resistance, oil resistance, corrosion resistance and tear resistance, wear resistant. Practical functions: spacer sleeves is lightweight, have good stability and insulation, can protect the hardware from rusts, widely used in household electrical product , in industrial area. 14 size: plastic spacers is available in size M3and M4and in 7heights. M3hat:7x3x3x40, 7x3x5x15, 7x3x8x20, 7x3x10x15, 7x3x12x15, 7x3x13x15,7x3x15x15. M4hat:7x4x3x40, 7x4x5x15, 7x4x8x15, 7x4x10x15, 7x4x12x15 Easy storage: plastic spacers is pair with a white storage box with separate compartments for each size, not easy to confuse, easy to use, find and carry. Wide application: plastic spacers is suitable for hardware , electronic product, instrument, machines, automobile part, automation devices, toy, etc. Specifications: Material:Nylons Package Includes: 230Pcs Column Spacer note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.