Cobalt Extra Long Drill Bits Set (5pc) M35 HSS 12"
Cobalt drill bit set with 5 sizes (1/8"–3/8"), 12" length for deep holes in metal, plastic, and wood. Noted for good quality and sharpness; some report edge durability and others mention a shatter risk
Highlights
- M35 cobalt HSS
- 12" long for extended reach
- 5-piece set with common sizes
Pros
- long 12-inch drill bits for deep holes
- includes multiple standard sizes
- high speed steel cobalt alloy
- industry-grade build
- sharp cutting edges
Cons
- mixed durability feedback
- one report of bit shattering above the tip
Best For
Features
- Five 12-inch cobalt drill bits in 1/8, 3/16, 1/4, 5/16, 3/8 inch sizes
- M35 cobalt high-speed steel construction for increased wear resistance
- Fully ground with 135-degree split point for precise drilling and no center punch
- Straight shank design with spiral flute minimizes friction and clears debris quickly
- Long-length bits suitable for drilling deep holes in stainless steel, plastic, and wood
