Dewalt 7pc Premium Percussion Masonry Drill Bit Set

Rock carbide tip maximizes carbide surface contact. 4 flute design. 3 flats on shank eliminate bit slipping on chuck. Sizes; 3/16″x3″,(2) 1/4″x4″, 1/4″x6″, 5/16″x6′, 3/8″x6″, & 1/2″x6″.