13 PCS Cobalt Drill Bit Set for Hardened Metal, Stainless Steel, Cast Iron, Plastic, and Wood

Check out the HIDOTOL Cobalt Twist Drill Bit Set featuring 13 pieces made of HSS M35 (Cobalt 5%). These bits are fully ground with a 135-degree split point and gold oxide finish. The flutes have a spiral design, and the set includes sizes ranging from 1/16" to 1/4". The cobalt material used in these drill bits increases heat and wear resistance, making them especially effective for cutting through tough metals like stainless steel, cast iron, high-temperature alloy, and titanium alloy. The High Speed Steel M35 (Cobalt 5%) also provides exceptional strength, hardness, and durability, resulting in extended tool life. The 135° split point and round straight shank ensure that the bits are self-centering and prevent them from walking during drilling, making the process both precise and fast. Additionally, the twist design of the drill bits helps clear particles faster, reduces friction, and allows for cooler drilling performance.

This set includes a drill bits holder with a size index for convenient storage and organization. The 13 piece set is priced at $23.89 and has received a customer review rating of 4.4 out of 5 stars based on 460 reviews.

In comparison, the HIDOTOL Cobalt Twist Drill Bit Set is also available in 115-piece, 29-piece, and 15-piece options, priced at $128.89, $59.89, and $46.89 respectively. An additional drill tap bit set and tungsten carbide burr set are also available with different quantities and materials for various applications. The sizes of the bits in each set are clearly detailed, and it's important to note that the 13-piece set is particularly suited to drilling tough, high tensile strength materials such as stainless steel, cast iron, high-temperature alloy, titanium alloy, hard plastics, and wood. The entire set is kept in a rose plastic case with a size index holder for easy storage and organization.

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