5-Piece Titanium Step Drill Bit Set – Automatic Center Punch – HSS and Titanium Coating – Double Cutting Blade for Metals and Plastics

SPIRAL GROOVE AND TITANIUM COATING --- The spiral groove drill bit cuts more smoothly than a straight groove. The drill bit is sharp and can easily drill perfect holes in sheet metal;

The titanium coating can reduce friction. SELF-CENTER PUNCH --- The thermowell head is made of tungsten carbide and its impact resistance is 10 times greater than that of ordinary center punches. LASER MARKING AND X-TYPE OPENINGS Laser marking. Clearer dimensions;

The X-type opening design can facilitate the removal of cutting debris during drilling to keep the drill bit clean. DOUBLE-CUTTING BLADE AND ALUMINUM HOUSING --- The double-cutting blade allows for faster and smoother cutting; an aluminum alloy housing can protect the drill bit. LONG LIFE AND SERVICE LIFE Alloy steel. Impact resistance.

Extend the life of the center punch by 1.5 times the speed. The spiral groove design makes cutting smoother and easier. The added cobalt reduces friction and lasts longer than those without cobalt bits. Automatic center punch. The center punch is composed of an alloy steel cutting head with a lifespan ten times longer than ordinary drill bits. One is used as 10 pieces. High quality. The stepped drill bits adopt titanium-coated high-speed steel for oxidation resistance and extend their lifespan. Wide applications. The sharpness and titanium coating allow for easy cutting of most sheet metal, plastics, and other materials. Specifications: #1: 3/16-1/2 (3/16.1/4.5/16.3/8.7/16.1/2). Step 6 #2: 1/8-1/2 (1/8.5 / 32.7 / 32.1 / 4.9 / 32.5 / 16.11 / 32.3 / 8.13 / 32.7 / 16.15 / 32.1/2 mm). Step 13 #3: 1/4-3/4 (1/4.5 / 16.3 / 8.7 / 16.1 / 2.9 / 16.5 / 8.11 / 16.3 / 4). 9 steps #4: 3/16-7/8 (3/16.1/4.5/16.3/8.7/16.1/2.9/16.5/8. 11/16.3/4. 13/16.7/8). 12 steps. Package includes: 5-step drill bit set, 1 x automatic center punch, 1 x aluminum case.