Cosari M35 Cobalt StepPoint 13

Features

1. Locks In Instantly With Zero Center Punch

Touch the 135-degree split-point tip directly onto flat plate, snapped studs, or round steel tubing at low RPM. It bites on the first turn with 0.0 mm lateral skating.

2. Stepped Shoulders Widen the Bore in Stages

Instead of jamming the full width of a 1/4-inch bit into solid steel at once, progressive stepped rings shear controlled layers—cutting downward arm pressure by 48%.

3. Parabolic Flutes Eject Cool Silver Ribbons

Deep-ground flutes pull twin continuous metal curls out of the hole while 5% M35 cobalt stays razor-sharp at 1,100°F, leaving a clean, burr-free exit.

• 1,100°F Red-Hardness Ceiling

  Maintains sharp cutting corners under sustained stainless-steel friction where standard HSS bits soften and mushroom at 600°F.

• Progressive Stepped Pilot Nose

  CNC-ground cutting shoulders on bits 1/8" and up bore a narrow pilot hole and step it to full diameter in one smooth downward pass.

• True 5% Solid M35 Cobalt Alloy

  No microscopic gold Titanium wash to rub off. Homogeneous 67 HRC cobalt alloy runs straight through the steel core and survives 1,100°F heat.

• Zero-Walk 135° Split Point

  Self-centering chisel geometry bites curved exhaust tubing, rounded bolt heads, and angled brackets on the very first revolution.

• 3-Flat Anti-Slip Torque Shanks

  Precision-milled flats on high-load sizes lock into keyless cordless chucks so the bit never spins when breaking through thick plate.

How to use it

1. 1

   Chuck Up & Shift to Low Gear

   Lock the 3-flat shank into your drill chuck and click your top speed switch to Gear 1 (600–900 RPM) for maximum torque and cool cutting.

2. 2

   Add a Drop of Oil & Touch Down

   Place a drop of oil on stainless or thick alloy and set the 135° split tip right on your mark—no center punch or starter bit needed.

3. 3

   Press Steadily for Silver Curls

   Apply smooth, even pressure as the stepped shoulders widen the hole in one pass, pulling out thick silver ribbons and leaving a clean exit.