Description
【High Quality Material】：These bits are constructed from high-speed steel with a titanium coating that facilitates penetration and protection from heat and high-rotation operation..【118° Split Point】：These step drill bits have a small point angle of 118° and require less pressure when centering in the material. The point starts drilling at contact, reducing friction, pressure, and heat. The larger the point angle, the higher the contact pressure and the centering in the material requires more pressure.【Double Flutes & Tri-Flatted】：These drill bits feature a special dual flute straight design for dependable performance and durability. The groove profile serves as a channel system for collection and for chip removal. And the shanks on these step drill bits have three flats that help prevent the bits from slipping in the drill chuck during drilling.【Product Feature】: Step drills are indicated in sizes. These sizes determine the diameters and the number of steps. Assortment comes with 3 drill bits of a combined 28-step sizes added：6-step drill（3/16"，1/4"，5/16"，3/8"，7/16"，1/2"），9-step drill（1/4"，5/16"，3/8"，7/16"，1/2"，9/16"，5/8"，11/16"，3/4"），13-step drill（1/8"，5/32"，3/16"，7/32"，1/4"，9/32"，5/16"，11/32"，3/8"，13/32"，7/16"，15/32"，1/2"）.【Application & Tip】：Step drills are ideal for sheet metal working and are suitable for cutting non-ferrous metals, plastic, etc. ***Tip***：Please keep the bit perpendicular to the mateial during operation to prevent it from breakage. If you have any questions about Yougfin products, please feel free to contact us
