Cobalt Extra Long Drill Bits Set (5pc) M35 HSS 12" vs Four spiral flute step drill bit set with countersink bits, 1/4 in hex
Overall winner: Four spiral flute step drill bit set with countersink bits, 1/4 in hex
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
Pros
- long 12-inch drill bits for deep holes
- includes multiple standard sizes
- high speed steel cobalt alloy
- industry-grade build
Cons
- mixed durability feedback
- one report of bit shattering above the tip
Four spiral flute step drill bit set with countersink bits, 1/4 in hex
Drill bit set with multiple step and countersink bits for metal, aluminum, wood, and plastic. Delivers quality performance and cleaner drilling, per customer feedback
Pros
- multi-diameter step drill options
- includes countersink bits
- nitriding HSS construction
- works across metal, wood, plastic
Cons
- mixed ease of use feedback
Head-to-Head
| Criteria | Winner |
|---|---|
| Price | KAKILFOB |
| Durability | Tie |
| Versatility | KAKILFOB |
| User Reviews | KAKILFOB |