Hole Punch / Knockout Punch Set Forsage F-3791 4–16 mm, 7 pieces

Forsage F-3791 is a 7-piece knockout punch set designed to produce clean, precise circular holes with diameters ranging from 4 to 16 mm. The set contains multiple punch sizes and complementary components that allow use with a manual or compatible hydraulic driver. It is intended for working with thin metal sheets, plastic panels and similar sheet materials where accurate, burr-free holes are required for cable glands, conduits or fasteners.

Advantages

The kit provides a compact selection of punches and dies covering the most common small-diameter hole sizes, reducing the need for separate tools. Components are matched to ensure alignment and a smooth cutting action, which minimizes burrs and distortion of the workpiece. The set is compatible with standard drivers suited to knockout punches, enabling both manual and hydraulic operation depending on the driver used. Its design supports repeatable, consistent hole quality across multiple materials.

Suitable for

• Creating precise cable gland and conduit entry holes in electrical panels
• Making small-diameter pass-throughs in sheet metal and plastic enclosures
• Plumbing and HVAC installations requiring accurate mounting or feed-through holes
• General workshop and installation tasks where burr-free circular holes of 4–16 mm are needed

Key specifications

• Hole diameter range: 4 mm to 16 mm
• Number of pieces: 7 (range of punches and matching dies)
• Material compatibility: thin metal sheets, plastics, and similar sheet materials
• Operation: suitable for manual and hydraulic drivers (driver not included)
• Designed for producing clean, circular, burr-minimized holes

How to use

Select the punch and die size corresponding to the required hole diameter and prepare the workpiece by marking the hole center. Assemble the punch and die around the material following the set's alignment method, then attach the appropriate manual or hydraulic driver. Apply steady force until the punch cuts through the material and a clean slug is produced. After cutting, disassemble the tool and remove any remaining slug from the die. Inspect the hole for proper fit and, if necessary, deburr lightly to meet installation tolerances.

Usage recommendations

Use the correct punch size for the intended hole and ensure the driver used is compatible with knockout punch tooling. Clamp or secure the workpiece to prevent movement during punching. For thicker or hardened materials, consider progressive cuts or a hydraulic driver to maintain tool life and hole quality. Store components clean and lightly oiled to prevent corrosion and ensure consistent performance.