To provide a drill capable of saving on time and labor when drilling a hole and positioning a drill cutter in a punched recessed part easily to increase machining efficiency and work efficiency.

A ring member 5 formed by a metal or resin material slidable for a drill blade 3 is fitted in the vicinity of an edge 3b of the drill blade 3. The ring member 5 is supported on a support member 7 attached to the vicinity of a tip of a drill main body 2 through a plurality of connection members 6. The pulurality of connection members 6 are constituted by a beltlike or barlike elastic member such as a spring wire and are arranged at an equal interval in the peripheral direction of the ring member 5. A tip side 6a of the connection member 6 is bent so as to surround a chuck 4, and a rear end side 6b of the connection member 6 is supported along the support member 7 attached to the vicinity of the tip of the drill main body 2 so as to slide in the vertical direction.