A system for attaching a handle such as an extension pole to a power tool such as a hand sander includes a collar, a pressure plate, front and back pairs of vibration absorbing spacers, and a handle holder. The collar has a contact area and two projections extending from the contact area, and the a plate fits onto the projections so that the plate and the contact area of the collar define a space for mounting of a tool. The handle holder extends between the projections and is between the first and second pair of vibration absorbing spacers. A tightening structure may press the plate toward the contact area and compress the first and second pairs of vibration absorbing spacers toward the handle holder.