1. Stable rigidity, light weight, non-magnetic and corrosion resistance; 2. General other CNC engraving machine, 3D printer; 3. Stack the gasket according to the el requirements and increase the height; 4. Made of wear-resistant elastic stainless steel. Product specifications: Outer diameter 10mm Color: sier Product weight: 20g material: metal Package Contents: 10* Aluminum isolation column Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.