HRC 61 Conical 8mm Roll Forged Black HSS Drill Bits

8mm Hss4241 Roll Forged Black Carbon Steel Drill Bit

Description:

Manufactured from Hss4241 steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67 with 5% Cobalt, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit. No center punch is needed—the 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander" Extremely heat resistant; must be used and operated at 1500 RPM or greater for maximum efficiency. Straight shank allows for firmly holding and accurate centering,

Hss cobalt drill bits Application

fit for standard drill chucks and regular round collet chucks Manufactured with all kinds of drill bit for metal,
such as HSS Twist Drill, HSS Center Drill Bit, HSS Step Drill Bits, Reduced Shank Drill Bit, Taper Shank Drill Bits, and etc.

Made into HSS Twist Drill Bits; HSS Step Drill Bit; Taper Shank Drill Bits; Reduced Shank Drill Bits; Bi-metal Hole Saw

Detail:

Hss4241 Drill bits Size List :

JIANG SU XING RUI TOOLS CO., LTD.  is one of the professional manufacturers of  different kinds cutting tools in china, specialized in all kinds of HSS twist drill bits, SDS drill bits ,wood working drill bits , HSS machine Taps,hand taps,spiral flute taps,End mill,Hole Saw and some other power tool accessories. We're located in hou xiang town,Danyang city,Jiang Su province,with very convenient transportation to HuNing Expressway, and the north of the Yangtze River.

With rich experience, advanced technology and professional skills, our products can always maintain the first class quality in China .In recent years, our products have being widely sold to both domestic and foreign markets, and well received by the customers worldwide, such as in America, Europe, Middle East, Indonesia and so on .

Competitive prices are always offered to our satisfied customers .No matter the order is big or small, we always do our best service for our customers at any time .We will grow up stronger with our customers shoulder by shoulder and would like to keep our mutual benefit relationship supported by both your efforts and ours. Meanwhile, We highly appreciate our customers for their support, we also thanks a lot for the people who gave their concern to us and helped us in our development.

Hope to create a brilliant future with you!