Cyclone HSS Premium Grade Annular Cutter, 3 4 in dia x 2 in Depth, 3 4 in Weldon Shank, Includes Pilot Pin no checkout nickel cadmium rechargeable battery Rechargeable up to nickel cadmium rechargeable battery Rechargeable up to 1 King Cable® is the low cost answer to eliminate injuries by broken air hose connections Highly resistant to rust and corrosion No tools needed easy to install and remove Evolution standard geometry is sufficient for most drilling applications Manufactured specifically to maximize hole accuracy while minimizing cutter vibration and extending annular cutter life Using this standard geometry enhances accuracy and saves time This allows for a single ejection of slugs when drilling through stacked material