Step Drill Bit Set, Tacklife PSD4 Titanium Spiral Grooved Drill Bit & Automatic Center Punch, Double Cutting Blades, X-Type Opening, Laser Marking|5-Piece Set|Total 50 Sizes;

Tacklife - Professional team on Amazon, which deals only with development of the tools.
We commit ourselves to using qualitative tools to improve the quality of life.

Features
➤Spiral groove design makes cutting more smoothly and easily;
➤Cobalt added reduces friction and lasts longer than those which does not contain cobalt bits;
➤The sharpness and titanium coating ensure easily cut through most sheet metal,plastic and some other materials with ease;
➤ Laser marking makes the size more clear;X-type openings design to facilitate the removal of cutting waste when drilling;
➤Double cutting blades design enables a faster and smoother cutting; High speed steel for longer service life;
➤3-sided shank prevents slip in drill chuck;
➤Delivers an automatic spring-driven strike when pressed against surface;
➤Adjustable cap regulates striking force;
➤Brass body has a deeply knurled surface for nonslip control.


Specification:
Size:
#1: 7mm~35mm(1/4~1-3/8), 10 Step
#2: 5mm~23mm(3/16~7/8), 12 Step
#3: 4mm~13mm(1/8~1/2), 13 Step
#4:7mm~20mm(1/4~3/4), 9 Step
#5: 5mm~13mm(3/16~1/2), 6 Step


Note:
Check the concentricity of the spindle and spring chuck and the clamping force of spring chuck,
for the concentricity may cause the drill bit broken and make drill hole too large.


Package:
5 x Spiral Grooved Step Drill Bit Set
1 x Automatic Center Punch
1 x User's Manual
1 x Aluminum Case
1 x 24 Month Warranty