GreenLee Hand Punch
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Greenlee Hand Punch Tools: Precision Hole-Making for the Trades
When professionals need a clean, accurate hole punched through an electrical panel, enclosure, or conduit box, Greenlee is the name they reach for. Greenlee has spent over 95 years refining its knockout punch technology, and the results are evident in every tool they produce. Their hand punch lineup combines thoughtful engineering with jobsite-tested durability, making them a go-to for electricians and contractors who can't afford mistakes when punching into steel, aluminum, brass, copper, fiberglass, or plastic.
The Slug-Buster® Advantage
The centerpiece of Greenlee's hand punch category is their patented Slug-Buster® punch profile. The Slug-Buster design creates a crease in the slug once the punch enters the die — after the punch cycle is complete, the slug is divided in half and separated from the die and draw stud. This seemingly simple innovation eliminates one of the most frustrating parts of traditional knockout work: digging out a stubborn slug from a tight space. The result is faster cycle times and a noticeably cleaner workflow on busy jobsites.
Greenlee's Slug-Buster punches and dies feature laser markings so you can quickly identify the tool needed, along with alignment markings for optimal accuracy. Draw studs with a "dog-point" tip help eliminate cross-threading, a small but critical detail that saves time and protects expensive components during heavy use.
Manual & Ratchet-Driven Hand Punch Kits
Greenlee's hand punch offering covers a practical range of manual and ratchet-driven systems. These versatile tools allow you to punch holes ranging from 1/2" to 2" in conduit size, accommodating 10-gauge mild steel and materials like aluminum, brass, copper, fiberglass, and plastics. The 7238SB kit is one of the most popular manual options in the lineup: the Greenlee 7238SB features a high-leverage wrench equipped with a five-degree ratcheting mechanism for maximum leverage, and the extended over-mold handle provides greater leverage and improves comfort and grip during operation.
For those working in conduit trade sizes, it's worth noting that Greenlee hand punch sizes correspond to standard U.S. conduit dimensions — a 1/2" conduit size punch actually makes a 7/8" hole, matching the real outside diameter of the conduit fitting. This ensures a precise, professional fit every time.
Built for the Professional Trades
Greenlee is a leader when it comes to developing innovative tools for electrical contractors, and their hand punch tools reflect that heritage. Greenlee knockout punch tools are designed for fast, precise hole cutting in electrical panels, boxes, and enclosures, backed by over 95 years of innovation across battery, hydraulic, and manual knockout systems. Whether you're running conduit on a commercial build or punching knockouts in a tight residential panel, Greenlee's hand punch tools deliver the accuracy and reliability the job demands.
Explore the full Greenlee brand catalog for more professional-grade tool solutions, or browse all hand punch tools to compare options across the category.