A: ROLOC HOLDER W/ 1/4" SHANK

Been using this holder for a few weeks and the threads engage smoothly every time, no wobble even at higher speeds. The 1/4" shank makes swapping between drills quick and hassle-free.

The 1/4" shank fits my drill chuck perfectly, and the female threads grab each Roloc disc firmly without any wobble. Swapping between sanding and grinding discs takes seconds now.

The female threading on this holder mates perfectly with the Roloc discs I already had, so switching grits takes seconds. It’s a simple, sturdy design that holds up fine under moderate grinding pressure, though the 1/4" shank limits it to lighter-duty work.