Feature:1. The kit is made of 40CR steel, which has high fatigue strength and good toughness, and has a longer service life.2. The hammer drill is equipped with a 4-flute drill bit to achieve the best smoothness and low vibration, and can perform precise work.3. This kit has high drilling and chiseling accuracy and can be quickly replaced to effectively use working time.4. These drills and chisels are stored in a suitcase, so that all components can be neatly stored for easy sorting.5. Suitable for drilling, chiseling, demolition and destruction, and can easily cut off hard materials such as bricks, tiles, mortar and concrete.Specification:Item Type: Drill Chisel SetDrill Specification Include: 5 x 110mm, 6 x 110mm, 8 x 110mm, 10 x 110mm, 6 x 160mm, 8 x 160mm, 10 x 160mm, 12 x 160mm, 8 x 210mm, 10 x 210mm, 12 x 260mm, 14 x 260mmChisel Specification Include: 2pcs Point Chisel: Length Approx. 160mm / 6.3in, 250mm / 9.8in1pc Flat Chisel: Approx. 158 x 20mm / 6.2 x 0.8in2pcs Flat Chisel: Approx. 252 x 20mm / 9.9 x 0.8in, 252 x 40mm / 9.9 x 1.6in.Package List:12 x Drill5 x Chisel1 x Storage BoxNote:Size error 5mm / 0.2in.