Straight-through isolation columns and circular straight pipe brackets can more conveniently support or fix equipment, making it safe, firm and aesthetically pleasing. Product material: This straight pipe is made of high-quality plastic, with fine workmanship, wear resistance, pressure resistance, durability and a longer service life. Product features: This straight pipe adopts a thickened design, which is not easy to break. The is smooth and polished without burrs. The set includes multiple sizes and is suitable for various items. Application: Suitable for PCB boards, mechanical equipment, electronic products, sockets, circuit boards, screw sockets and many other supporting or isolating items. Name: Straight-through Isolation Column Specification: 7 * 4 * 8 (20pcs) 7 * 4 * 10(20pcs) 7 * 4 * 12(20pcs) 7 * 4 * 15(20pcs) 7 * 3 * 12(20pcs) 7 * 4 * 3(40pcs) 7 * 3 * 15(20pcs) 7 * 4 * 5(20pcs) 7 * 4 * 6(20pcs) 7 * 3 * 3(40pcs) 7 * 3 * 5(20pcs) 7 * 3 * 6(20pcs) 7 * 3 * 8(20pcs) 7 * 3 * 10(20pcs) Material: Plastic Colour: Black Package Contents: 1 set * Straight-through Isolation Column(320pcs) Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.