General Tools & Instruments 147 6 In. Digital Fractional Caliper
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Punches clean holes in conduit and metal from 1/2 inch to 2-1/2 inches using hydraulic force
The L.H. DOTTIE HPTK1 is a hydraulic punch tool kit designed for creating clean holes in metal enclosures and panels. It covers a size range from 1/2 inch to 2-1/2 inches using hydraulic force for consistent results. This kit is intended for electricians and maintenance technicians who need reliable conduit entry points.
The hydraulic operation reduces operator fatigue compared with manual ratchet punches and works well on mild steel and aluminium enclosures. It is not suited for high-volume production lines that require automated tooling or for punching materials thicker than the manufacturer's rated capacity. Buyers who need a second hydraulic pump or spare punches beyond the supplied range should look elsewhere.
The included punches and dies handle standard knockout dimensions within this range, providing enough headroom for most residential and light commercial conduit work. The kit runs out when a project demands sizes larger than 2-1/2 inches, non-standard shapes, or materials harder than the rated mild steel limit.
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| Product | |
|---|---|
| Brand name | DOTTIE |
| Product color | Transparent |
The kit punches holes for conduit trade sizes from 1/2 inch through 2-1/2 inches, so you need the matching conduit or pipe you intend to install.
Yes, the hydraulic pump operates by hand pressure and the dies accept standard draw studs, so your current wrenches will still turn the studs.
Measure the finished hole with a caliper or tape; it should match the marked conduit size on the die and show no burrs or distortion.
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