Premium Material:Made of aluminum alloy material, light weight, not easy to deform after long term use. Easy to Use:Create distance between parts, reduce hole size, add spacing for bolts, install bearings, or use as a lightweight shaft. Outer Diameter: Aluminum alloy spacer has outer diameter of 6mm, which is very suitable for creating space between two components on a 6mm shaft or column. Practical Tool:Aluminum alloy spacers have many uses and can be used to bind loose ends of pieces of machinery. Sales Service:If any problems occur during the purchase, please feel free to contact us, we will definitely give you a satisfactory reply., Weight: 0.0220462262 pounds, Manufacturer: Les-Theresa