1-1/8" Flat Boring Bit For fast, small hole drilling in wood, count on Milwaukee"s premium quality 1/4" flat boring bit. Made of heat treated high carbon steel, the flat boring bit bores clean holes at any angle in wood, plastic, plywood and Formica. The drill point and cutting edges can be resharpened often for economical hole drilling. Bit offers a 6" drilling depth but can be used with 12" extension, 48-28-3350, for extended deep hole drilling. Features: 6-3/16" Long 1-1/8" Flat Boring Bit 1/4" Shank Since its founding in 1924, Milwaukee has focused on a single vision: To produce the best heavy-duty electric power tools and accessories available to the professional user. Today, the Milwaukee name stands for the highest quality, durable and reliable professional tools money can buy.