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Thirteen cobalt twist drill bits in graduated sizes inside a plastic storage case

GMTOOLS 13Pcs Cobalt Drill Bits Set M35 HSS 135 Degree Tip 1/16-1/4 inch

SKU CH-FXW2-0QC8Y

13-piece M35 cobalt drill bit set with 135-degree split points for hardened metal, stainless steel, cast iron, wood and plastic, supplied in a storage case

  • Fit and compatibilityStainless,Wood,Cast Iron,Plastic,Metal,Steel
  • Commercial or home use13 pcs Cobalt
  • Product type1, Stainless,Wood,Cast Iron,Plastic,Metal,Steel
  • Main materialSteel
  • Sold asSet
  • Number of items13, 13Pcs Cobalt Drill Bits Set
  • M35 alloy with 5% cobalt resists wear on hardened metals
  • 135° split point centres automatically and cuts with less pressure
  • Twist jobber design clears chips faster for cleaner holes
  • 13-piece range covers 1/16 to 1/4 inch for versatile drilling
  • Plastic storage case keeps bits organised and protected

13-Piece Cobalt Drill Bit Set

This GMTOOLS set contains 13 M35 cobalt twist bits ranging from 1/16 to 1/4 inch. The 5% cobalt alloy increases wear resistance over standard 4241 HSS bits. It targets tradespeople and DIY users drilling hardened metal, cast iron, stainless steel, wood and plastic.

135° Split Point for Quick Starts

The 135 degree split point centres itself automatically and cuts with less pressure, reducing walking on hard surfaces. The round shank fits standard drill chucks and tool-holding systems. The twist flute clears chips efficiently. No installation issues are noted in the data.

Covers 1/16 to 1/4 Inch Diameters

The 13 sizes handle common pilot, clearance and tapping holes in sheet metal, bar stock and timber. M35 steel resists heat buildup better than basic HSS, but the set stops at 1/4 inch, so larger holes need a separate bit. The plastic case keeps the pieces organised.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 77% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameGMTOOLS
Part numberCobalt Twist Drill Bit
Product type1, Stainless,Wood,Cast Iron,Plastic,Metal,Steel
Size & build
Main materialSteel
Compatibility
Fit and compatibilityStainless,Wood,Cast Iron,Plastic,Metal,Steel
In the box
Number of items13, 13Pcs Cobalt Drill Bits Set
More details
Commercial or home use13 pcs Cobalt

Questions about this item

How can I confirm the 135 degree split point is self-centering after I start drilling?

The bit should enter the workpiece without wandering and produce clean chips with light pressure on stainless steel or cast iron.

What comes in the box and what must I supply myself?

The set includes 13 cobalt bits from 1/16 to 1/4 inch in a plastic storage case; you only need a compatible drill chuck.

Which bit count should I choose between the 13, 15, 21, 29 and 115 piece options?

Pick the 13 piece kit for the exact 1/16 to 1/4 inch range shown here; larger sets add smaller or larger diameters.

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