The 6" spindle has a 3/4" bore with set screw for attaching it to your motor. 20 segment hub with an overall diameter of 8"
“The flap sander came in and we knocked out nearly 500 ft. of trim in a timely manner. Purchased the 100 grit inserts and the design conforms to moulding profiles great. Truly a labor saving addition to our cabinet shop. Thanks for your product”