ITEM NAME:13PCS Drill Bit Set Shank Metal M35 Cobalt Jobber Straight Shank Twist Dri MAD Descriptio n Description: Made of High Speed Steel containing cobalt (HSS M35), the cobalt giving an auburn color to the metal, is stronger than other HSS bits, meaning that it not only lasts longer but also can work hardened metals and things with denser or tougher attributes that most other bits, no matter the quality, cannot cut. Thus Cobalt Bits are the ideal choise for professionals or DIYers that are looking to take their craftsmanship to the next level with extended working hours and a far more diverse range of materials. Specifications: Material: Stainless Steel Color: Gold Size: 136*77*15mm Package Included: 1* 13PCS Set M35 Straight Shank Twist Drill Note: Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! 13PCS Drill Bit Set Shank Metal M35 Cobalt Jobber Straight Shank Twist Drill.1 13PCS Set M35 Straight Shank Twist Drill. We'd like to settle any problem in a friendly manner. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. Material: Stainless Steel.