INGCO COS23031 accessory set includes 3 pieces and is a professional set consisting of three main sets (80 pieces in total), designed for impact drilling and screw driving. The bi-metal hole saw set (13 pieces) includes sizes from 19–64 mm, made of HSS M3 material, and comes with adapters and a pilot drill. The hex shank drill bit set (16 pieces) is suitable for metal (2–8 mm), masonry (4–10 mm), and wood (4–10 mm). The impact drill bit set (51 pieces) includes 25 mm and 50 mm bits, magnetic nut drivers, and quick-release holders.

Features
Includes three main sets for different applications
Bi-metal hole saws for cutting larger holes in various materials
Drill bits for metal, masonry, and wood
Impact bits for heavy-duty fastening tasks
Magnetic nut drivers for secure grip
Quick-release holders for fast bit changes
Durable materials for long-lasting use
Suitable for professional and DIY use

Sets :
Shank Type: Cylindrical
Number of Pieces: 16 pcs
Storage Type: Case
Bit Sizes: 10mm,2mm,3mm,4mm,5mm,6mm,8mm

Shank Type: Hexagonal
Number of Pieces: 51 pcs
Storage Type: Case
Bit Sizes: 10mm,6mm,8mm,PH1,PH2,PH3,PZ1,PZ2,PZ3,SL4,SL5,SL5.5,SL6,T10,T15,T20,T25,T27,T30,T40,T35

Number of Pieces: 13 pcs
Storage Type: Case
Material: HSS M3 Bi-metal
Size:19mm(3/4")/22mm(7/8")/29mm(1-1/8")/35mm(1-3/8")/38mm(1-
1/2")/44mm(1-3/4")/51mm(2")/57mm(2-1/4")/64mm(2-1/2")
1 pcs arbor:3/8" Hex Shank,Fit Size:9/16"~1-3/16"
1 pcs arbor:7/16" Hex Shank,Fit Size:1-1/4"~8-17/64"
1 pcs adapter arbors with 1/2-20 threads to fit hole saws 5/8-18
threads
1 pcs pilot drill
1 pcs hex key wrench