This aluminum Arbor extension is designed for our 10" 40 ply flannel finishing buffs.
The body is aluminum and the bolt is stainless, 5/8-11 thread.
The bolt is extra long so you can stack thicker buffs or abrasive wheels. With that there may be an instance where you will need to add a washer under thinner buffs so that the bolt doesn't bottom out on the machines Arbor.