Bosch BL4138 11/64″ Black Oxidespjobber (Bulk)

These 12-piece fractional jobber drill bits from Bosch are expertly crafted to meet the diverse drilling needs of various materials, including metals like steel and aluminum as well as woods and composites. With a diameter of 11/64 inches, these drill bits feature a durable black oxide surface coating that enhances heat resistance, allowing them to last significantly longer—up to 50% more than traditional high-speed steel bits. The innovative speed helix design ensures that drilling is three times faster than conventional options, making these bits a practical choice for both professionals and DIY enthusiasts seeking efficiency and reliability in their drilling tasks.