The drill bits can be used for cutting metal, plastic, wood, and other materials. In addition, the 135-degree split point prevents walking across the surface and allows the bit to penetrate hard material without a pilot hole. The golden coating is corrosion resistant and increases the hardness of the drill bits. The precision-ground bits are designed for smooth, accurate, and durable performance. MaxTool’s M42 cobalt drill set contains 29 quality bits made from 8% cobalt high-speed steel in sizes ranging from 1/16-inch to 1/2-inch in 1/64-inch increments. Premium Option: MaxTool 29-Piece M42 Cobalt Drill Bit Set Many issues can be resolved by using a slower speed, using cutting oil, and letting the drill do the work rather than forcing the bit in. Things to Keep in Mind Before Buying This Product: Some users have complained of slow drilling on hardened stainless steel or hard metal. The case is quite useful because it folds and locks with a slide, a feature that’s standard on DeWalt drill bit sets. Things I Like About This Product: These drill bits are sharp, durable, and will survive almost anything as long as you have a clean, straight drilling technique, and use oil when drilling into metal. The bits have pilot points and slit tip designs to prevent bit walking and to ensure maximum speed, user control, and extended life. The DeWalt DWA1240 cobalt drill bit set is designed for drilling in stainless steel and other hard metals. Things to Keep in Mind Before Buying This Product: The bit sizes stamped on the bit are hard to read.īudget-Friendly Option: DeWalt 14-Piece Cobalt Drill Bit Set As long as the bit is rotated slowly, cutting oil is used, and the angle is right, these bits will cut through even the hardest steel smoothly. Their no-slip shanks let you chuck right up to them without worrying about breakage. Things I Like About This Product: These bits are of the usual Bosch quality with robust design and long-lasting durability. The bits that are 1/8-inch or larger feature a split point while bits that are 3/16-inch or larger feature a three-flat shank for a better bit grip. The bits’ no-skate tip is fast and accurate, and won’t walk on the material’s surface. Their hardened surface is ideal for drilling stainless steel, cast iron, titanium, light-gauge metal, and aluminum. These bits are highly durable and heat resistant. The Bosch 21-piece M42 drill bit set includes, as its name suggests, bits made from M42 Cobalt alloy that contains 8% cobalt. One issue with the case is that it doesn’t close completely tight, and the printed bit size on the case is not easy to read. Things to Keep in Mind Before Buying This Product: These bits are very sharp so you may need a hex or flatted shank when drilling metal or they can bite and dig into the metal surface. The quality is excellent and the bits do what the manufacturer claims, which is drilling through hardened metal with no troubles. Things I Like About This Product: The kit has a good range of sizes, so drilling holes of the right size will not be a problem. The bits come packaged in a metal index case that makes it easy to access and identify the individual bits. The toughened bits are ideal for drilling tough metal including heavy-duty abrasive alloy metal or hardened steel. The 8% cobalt alloy is heat- and abrasion-resistant. The tips help increase efficiency by allowing to drill with less force and eliminating “walking” across the work surface. The bits range in sizes from 1/16- to 1/2-inch in 1/64-inch increments and have 135-degree split-point tips. This Irwin drill bit set contains 29 bits made from industrial grade cobalt steel. Top Pick: Irwin M35 Cobalt Steel Drill Bit Set
Budget-Friendly Option: DeWalt 14-Piece Cobalt Drill Bit Set.Top Pick: Irwin M35 Cobalt Steel Drill Bit Set.Before jumping into the individual reviews of the picks, here’s a quick list of the top three: In this article, I will take a look at what I think are the seven best cobalt drill bit sets.
In those cases – like when drilling through tough pieces of metal – cobalt drill bits are a much better choice. While in most cases, regular high-speed steel drill bits will do the job just fine, there are some situations in which more strength is required. It contains 29 bits covering all the sizes you might need for regular projects and offers a good balance between performance and cost. In a hurry? While I recommend reading the whole article to find the cobalt drill bit set that best suits your needs, I have to mention here that this one from Irwin is my favorite.
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