- Cobalt Steel: Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
- Self Centering: The 135° quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. The bits will not “walk” or “wander.” Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.
- 5 pc Metric Bits: The set includes 5 pcs of 9mm M35 cobalt steel twist drill bits. Well packed in a plastic case for convenient storage. Manufactured to German DIN338 standard.
- For Metalworking: Particularly successful in cutting through hard metals (hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminum, too. Not for hardened steel/high carbon steel. Try to adjust the RPM when it fails to penetrate.
The Dremel 4300 is the first Dremel rotary tool to allow tool-less and collet-less accessory changes with the inclusion of the three-jaw chuck. The chuck accepts all Dremel accessory shank sizes for fast and convenient accessory changes without ever using a wrench. Featuring the all-new pivot light, your projects are well-lit with an optimum line of sight since the light pivots to direct illumination where you want it. Experiencing the full range of Dremel rotary tool applications is easier than ever because the 4300 offers our most powerful motor with built-in variable speed and electronic feedback circuitry. And the slim, ergonomic body design provides a comfortable 360-degree grip zone No matter how you hold it for extended ease of use. The completely redesigned airflow system lets the Dremel 4300 run cool, quiet, and smooth so completing projects are more enjoyable than ever.
Polishing tips are made of special rubber and mixed abrasive machining, metal processing, non-metallic parts and handicrafts, such as can choose according to different machining parts strop stone shape. Polishing rubber heads can be grinding head grinding and polishing, and mixed burn the workpiece, can quickly and high precision cast any original rough surface after machining, grinding was processed workpiece roughness ultimately achieve grade 9.
20V, Max, Lithium Ion Brushless Compact Drill Driver, Compact Lightweight Design, High Performance Motor Delivers 340W Out of Power, with 75 percent more runtime with Lithium Ion batteries, High Speed Transmission Delivers 2 Speeds, with No Load speed of 0 50 & 1,750 Rpm, 1/2″ Single Sleeve Ratcheting Chuck, Includes: Two 20V Max Compact Lithium Ion Battery Packs, Compact Charger & Contractor Bag. Chuck Type Plastic Ratcheting.