1/8 X 1 X 1/8 (3インチ全長) カートリッジマンドレル D-3

The 3 inch overall length gives me enough reach to get into the tight corners of the weld seams without the tool body scraping. Cartridge rolls seat firmly on the 1/8 inch mandrel and don't slip even under decent pressure. Runout is minimal too, which keeps the finish even.

Snug fit on my die grinder and the 1/8" shank runs true with barely any wobble. Used it with 1" cartridge rolls on some weld cleanup and the mandrel held the roll tight the whole time.

The 3" overall length gives me enough reach to get into the tighter corners without the shank bottoming out. Run it slow and the cartridge rolls stay put on the 1/8" mandrel instead of wandering. Been through a dozen rolls already and it hasn't bent.