4Pcs HSS Drill Bit: 3, 4, 5, 6mm 

4Pcs Masonry Dill Bit: 4, 5, 6, 8mm

8Pcs 22mm Screw Bit: PH2, PH3, PZ2, PZ3, T20, T25, SI0.8, SI1.2

1Pcs Magnetic Holder

HSS Drill Bit: HSS

Masonry Drill Bit: Body: Carbon Steel          Tip: Tungsten Carbide

HSS Drill Bit: Rolled & Polished

Masonry Drill Bit: Milled

HSS Drill Bit: Type N Regular Flute

Masonry Drill Bit: R Flute

HSS Drill Bit: Black Oxide

Masonry Drill Bit: Sand Blasted

1. For metal, pvc and plastic drilling - HSS drill bits (made from High Speed Steel)
2. For masonry, wall, glass and tile drilling - masonry drill bits (the shank is made from carbon steel or chrome steel, the tip is made from tungsten carbide)
3. For wood drilling - brad point drill bits, flat drill bits and auger bits (usually made from carbon steel, sometimes made from HSS steel for special purpose)

4.Whether it’s a home improvement job or a more complex building project, the set giving you a variety of tools for a multitude of DIY tasks.

5.A combined set with drills of various types (for wood, metal, concrete) of the most common sizes,It is designed for household use.