Greenlee LDTAPKIT Drill/Tap/Countersink Set - Fast Long Bits

In this review of the Greenlee LDTAPKIT long drill/tap set, the bottom line is simple: this kit is for technicians and fabricators who need to drill, tap and countersink holes faster in thicker sheet and light plate metals. The biggest reason to buy is speed and convenience - the one piece drill/tap design and included quick change adapter let a user produce proper threads up to 1/2 in material far quicker than traditional separate drilling and tapping methods. It is a practical add-on for electrical cabinet work, metal fabrication benches or mobile service rigs.

Key Features

• One piece drill/tap design: Produces the correct hole size for each tap in a single operation, reducing setup and alignment errors.
• Faster tapping: Tap holes up to four times faster than traditional methods, saving significant labor time on repeated operations.
• Long reach bits: Long length drills and taps work through up to 1/2 in material, allowing use on thicker panels and assemblies.
• Quick change adapter included: The adapter speeds bit swaps and integrates with common quick-change systems for jobsite efficiency.
• Hardened high speed steel construction: Provides cutting edge durability for work in mild steel, copper, brass and aluminum.

Who It's For

The Greenlee LDTAPKIT is best for electricians, cabinet builders and maintenance techs who frequently make threaded holes in sheet metal and light plate and value speed and a compact toolset. It fits shops and field service where saving minutes per hole adds up across a job.

It is less suited to users who only rarely tap small thicknesses or who need taps for hardened steel; hobbyists doing occasional, delicate work may prefer standard taps and hand tools for greater control.

Pros & Cons

Pros

• Speeds tapping operations considerably compared with separate drilling and tapping.
• Long bit length lets you tap up to 1/2 in thick materials for more versatile use.
• Included quick change adapter and one piece bits improve convenience and reduce setup time.
• Good value for professionals needing a compact set that covers 8-32 to 1/4-20 sizes.

Cons

• Durability reports are mixed; some users report bit breakage under heavy use, so care and proper feed rates are required.

Specifications

Brand	Greenlee
Set contents	7 pieces covering 8-32 to 1/4-20 threads
Material	Hardened high speed steel
Max material thickness	Up to 1/2 in mild steel, copper, brass and aluminum
Included accessory	Quick change adapter
Primary use	Drill, tap and countersink operations

Our Verdict

The Greenlee LDTAPKIT is a worthwhile purchase for professionals who need to speed repetitive threaded-hole work in sheet and light plate metals; its one piece design and long bits make it efficient and versatile. While users should respect proper feed and avoid extreme abuse to minimize breakage, the kit delivers clear time savings and solid value for tradespeople and shop technicians.

Frequently Asked Questions

Can this kit tap steel?
Yes, it can tap mild steel up to 1/2 in thick as well as softer metals like copper, brass and aluminum.

Does it include an adapter for quick-change chucks?
Yes, a quick change adapter is included to speed bit swaps and integrate with common quick-change systems.

Are the bits durable for production use?
Bits are hardened HSS and hold up well, but some users report occasional breakage under heavy use, so proper technique and feed rates are recommended.