Quick facts
- Brand: GMTOOLS
- Price: USD 9.99
- Rating: 4.40 (2404 reviews)
If you go through small drill bits often—especially on tougher materials—this GMTOOLS 1/8″ cobalt drill bit set is a practical, budget-friendly refill. The set includes 10 jobber-length twist bits (1/8″ diameter) stored in a sturdy plastic case, making it easy to keep spares on hand in the shop or tool bag.
You can view the current price and full details on Amazon here.
Made from M35 high-speed steel with 5% cobalt, these bits are designed to handle heat and wear during drilling. The 135° split-point tip helps with precise starts and faster penetration with less pressure, while the straight shank supports stable chucking.
- 10-piece set of 1/8″ (0.13″) jobber-length cobalt drill bits in a sturdy storage case
- M35 high-speed steel with 5% cobalt for wear resistance, durability, and heat resistance
- 135° split-point tip for more accurate starts and quicker penetration with lower pressure
- 2-flute spiral design helps clear chips to reduce friction and heat buildup
- Suitable for hard metals, stainless steel, cast iron, galvanized pipe, high-temperature alloy, titanium alloy, wood, and hard plastics
For DIYers and pros alike, the main advantage here is having multiple identical 1/8″ bits ready to go—ideal for repeated holes, pilot drilling, and projects where breakage or dulling is common.
