Power bits made of Cr-V steel, and wear well from professional treated. 
Face treated by special technical to prolong use life. 
Combined with quality woodworking drill bits which allows accurate drilling in wood and the brad point tip reduces walking, and the precise cutting edges reduce splintering
With removable storage and kept in plastic box.
Included: 

Woodworking Drill bits: 4-5-6-8-10mm; 
24pc 6.35x25mm power bits:
Philips 2X#1,3X#2,3X#3;
Torx:T10,T15,T20,T25,T27,2xT30,T40;
Hex:1.5,2.0,2.5,3.0,4.0,5.0,5.5,6.0mm