In 1999, Epley Enterprises pioneered the creation and development of the Rockbuster. The Rockbuster is a unique design combining three distinctly different face angles with a special grade of carbide, a special grade of steel, and with special engineered chipways in its face, thus, ensuring that the highest penetration rates when air hammer drilling in hard rock are achieved. In other words, if the rock drilled exceeds 20,000 psi compressive strength, the Rockbuster is a suitable choice.
The Rockbuster can also be described by saying that it is a hybrid between the Concave and Convex drill bit face designs. The Concave bit face design holds a very straight hole due to the tapered recess in the face of the bit. This recess or "dish" causes a slight coring action which makes the bit hold true. This coring action also gives excellent penetration and very positive air flushing of the hole.
Drill Bit Kit
The Convex bit face design does not have a tapered recess in the face and comes with two different gage rows leading up to its flat impact face. The inner gage row helps to protect the outer row from excessive wear. Having in mind both the Concave and Convex bit face designs, the Rockbuster was developed, which can also described as a Convex with a smaller than the Concave recess in the face.
The Rockbuster quickly became very popular with drillers and other drilling equipment manufacturers followed and started making the bits in this design. As a result, the Rockbuster became also known as Rockcrusher and CC Krusher. Today, the Rockbuster is becoming the most commonly used drill bits' face design.
Special Price!!! Denali Homeowner's Drill and Drive Bit Accessory Kit, 150-Piece
Oct 17, 2011 08:51:23
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Denali Homeowner's Drill and Drive Bit Accessory Kit, 150-Piece Feature
- 150-Piece Homeowner's drill accessory kit designed to tackle broad variety of home improvement projects
- Features comfortable soft-handled, quick-change ratcheting screwdriver
- Fully ground high speed M2 titanium-coated drill bits and S2 screw driving bits
- Set includes: titanium bits, brad point bits, glass and tile bits, masonry bits, wood boring bits, hole saws, ratcheting screwdriver with 9-Inch flexible drive extension, 1-Inch, 2-Inch and 4-Inch screw driving bits, nut drivers, punches and more
- Durable high-impact carrying case with pull out drawer for additional storage; ideal for screws, nuts, bolts, drywall anchors and other small parts
Denali Homeowner's Drill and Drive Bit Accessory Kit, 150-Piece Overview
Denali's 150-piece homeowner's accessory kit was designed to meet all of the homeowner's drilling and screwdriving needs. Drill wood, plastic, metal, concrete, tile, and glass. Features a comfortable soft-handled, quick-change ratcheting screwdriver with 1-, 2-, and 4-inch screwdriving bits and a 9-inch flexible extension. Kit also includes four drill stops, hole saws, drywall dimplers, and more. Makes a perfect gift for any homeowner or do-it-yourselfer.About Denali
Named after the tallest mountain range in North America, Denali tools stand above the rest in providing an exceptional blend of quality craftsmanship, professional-grade features, and customer value. All homeowners, hobbyists, do-it-yourselfers, and price-conscious contractors will appreciate Denali's design and functionality. Denali products compliment one another and will be an indispensable and long-lasting addition to any home or workshop. Our products undergo rigorous third-party testing to ensure high performance standards. Denali tools are available exclusively on Amazon.com.
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