The 3-Piece Flexible Drill Bit Kit is perfect for in-wall drilling and includes all the necessary components for pulling wires up to 1/2 in. O.D. The flexible drill bit (Cat. No. 53718) is capable of creating 9/16 in. holes in wood, while the pulling grip (Cat. No. KPS050) can attach to the bit and pull wires and cables ranging from 3/8 in. to 1/2 in. This comprehensive kit is designed for both drilling and wire/cable pulling, and also includes a folding placement tool, a placement guide for guiding the bit through walls, and a 9/16 in. x 54 in. flexible high-speed steel drill bit.