Description: This is a accessory of 3D Printer, made of high-quality environment friendly chromeplate, sturdy and durable, wear-resistant and heat resisting, improve the efficiency of 3D printer and have a long service life. Features: 1. Made of high-quality chromeplate, performs well in contact with oils and many chemicals. 2. Remains useful over a wide temperature range, displays outstanding physical toughness. 3. Outstanding resistance to damage caused by wear and tear. 4. Perfectly match the linear rail, improve work efficiency of the printer. 5. High temperature resistance. 6. Green, safe and harmless. Strict quality control system, quality assurance. Specifications: Suitable: for 3D Printer Material: Chromeplate Model: SHF12 Size: 4.2 * 1.8 * 2.3cm / 1.7 * 0.7 * 0.9in Bore Diameter: 12 * 5.6 * 5.6mm / 0.5 * 0.2 * 0.2in Weight: 45g Package List: 2 * Shaft Support 1、Made of high-quality chromeplate, performs well in contact with oils and many chemicals 2、Remains useful over a wide temperature range, displays outstanding physical toughness 3、Outstanding resistance to damage caused by wear and tear 4、Perfectly match the linear rail, improve work efficiency of the printer 5、High temperature resistance