SDS-Plus Shank Explained

SDS-Plus is a hammer-bit shank system for compatible rotary hammers and lighter concrete drilling applications.

How to Read Metric Tap Markings

Metric tap markings combine nominal diameter and pitch, such as M10 x 1.5.

What Do NPT and NPS Mean?

NPT is tapered pipe threading while NPS is straight pipe threading; the fitting standard determines the tool.

What Do UNC and UNF Mean?

UNC and UNF identify coarse and fine unified thread series used with matching taps, dies and fasteners.

What Is a 118-Degree Drill Point?

The 118-degree point is a common general-purpose geometry for drilling a wide range of materials.

What Is a 135-Degree Split Point?

A split-point geometry helps reduce walking and can improve starting behavior on many metal drilling jobs.

How to Read Drill Bit Sizes

Drill bit sizes may be fractional, metric, letter or number; the label determines the actual diameter.

What Is an Annular Cutter Pilot Pin?

A pilot pin helps locate the hole, guide the cutter and assist with slug ejection.

What Is a 3/4-Inch Weldon Shank?

A 3/4-inch Weldon shank is a common annular cutter interface used with compatible magnetic drill arbors.

What Is a Screw Extractor?

A screw extractor removes damaged fasteners after a properly centered pilot hole is created.

What Is a Carbide Burr Used For?

A carbide burr is a rotary cutting tool used for deburring, shaping, blending and material removal.

What Is a Reamer Used For?

A reamer removes a small amount of material to improve hole size, roundness and finish after drilling.