A-4M Skyhawk “Diamondbacks” 160024, VMA-131, US Marines, 1993

5 piece, multi-purpose, drill bit set, drills tile, masonry, wood, metal & concrete, innovative tungsten carbide plate suitable for multi-purpose applications, sharp, multiple diamonds ground cutting edges for a high drilling rate, even in hard materials such as tiles & concretes, sturdy drilling head for a long serviced life in drilling & impact drilling applications, includes the following sizes: 5/32″ x 4″ x 6″, 3/16″ x 4″ x 6″, 1/4″ x 4″ x 6″, 5/16″ x 4″ x 6″ & 3/8″ x 4″ x 6″.