Short made of solid hss steel drill bit with a 14 hexagonal quick change adapter very short best suited for use in combination with an angled gearbox or applications in very tight places very stable as milled from one piece content 1 of each diam x total length x working length 3 0 mm x ca 42 mm x ca 15 mm 4 0 mmx ca 52 mm x ca 19 mm 5 0 mm x ca 60 mm x ca 25 mm 6 0 mm x ca 60 mm x ca 25 mm 8 0 mm x ca 60 mm x ca 30 mm