https://www.homedepot.com/p/RYOBI-Rotary-Tool-1-2-in-Sanding-Band-Mandrel-A90SD06/318492497 Ryobi 1/2" Rotary Band Mandrel Sanding Tool Attachment (A90SD06) on sale for $2.60. Shipping is free, otherwise, select free ship to store as an alternative option.