1" DeWALT Heavy Duty Self Feed Wood Bit, DW1630. Heavy-duty self-feed bit is designed for heavy duty drilling applications. It is ideal for running pipe or conduit and is great for electricians, plumbers, handy man or gas installers. Cut your holes in wood faster with DeWalt's self-feed bits. The two-cutter design is available in this size bit. The self-feed spur is extremely aggressive and can be replaced. It has flats on the shank to eliminate the shank spinning in the chuck. The 1" self feed bit are brand new in retail packaging for use or resale. Any questions please feel free to email us or call us.