Seghetto per fori 6-1/4 pollici per legno, metallo morbido, cartongesso, cartongesso e compensato, 159 mm B
Very useful for Interior decoration, DIY tools, downlight installation. The shank of arbor is hex,3/8"(9.5mm),it is distance between two sides. so it is for 10mm (3/8") drill chuck or larger chuck.