Combined with quality drill bits.
Woodworking drill bits which allows accurate drilling in wood and the brad point tip reduces walking, and the precise cutting edges reduce splintering.
Masonry drill bits for drilling in brick, cinder block and tile.
With removable storage and kept in plastic box.
10pc set, included: 

5pc Woodworking Drill bits: 4-5-6-8-10mm; 
5pc masonry drill bits: 4-5-6-8-10mm.