DeWalt D180002 is a 9 pc. Electricians bi-metal hole saw kit, especially for designed to cut wood and metal. This complete performance oriented kit of power tools contains metal hole saws of the sizes 7/8, 1-1/8, 1-3/8, 1-3/4, 2, 2-1/2, small and large mandrel for quick change, replacement parts, and a carrying case. This DeWalt kit features thick and hardened backing plates that reduce warping as well as increase the cycle. This effectively makes the saws more long lasting, 35% than its closest competitor and 200% than any other ordinary hole saw kits available. The enlarged bi-metal portion of the hole saw made from M3 steel can withstand any wear and allows faster cuts. The advanced deep-cut style of DeWalt D180002 enables its wider application on any type of material. Moreover, the metal cutting performance of DeWalt D180002 is further enhanced by its tooth and set patterns.