10 Best Knockout Punches 2026 in the United States

The Greenlee 7310SB is a hydraulic knockout punch kit designed to create precise holes ranging from 1/2" to 4" in various materials, including up to 10-gauge mild steel and 12-gauge stainless steel, as well as aluminum, brass, copper, fiberglass, and plastics. Its 11-ton hydraulic power makes punching through tough materials easier than manual alternatives, reducing user effort. The kit includes a hand pump, ram, Slug-Buster and standard round punches, dies, and multiple hydraulic draw studs, all neatly organized in a carrying case with part markings for quick identification.

This setup supports one-person use thanks to its ergonomic, compact design and features like knurled edges on punches for better grip and a dog point tip to prevent cross-threading. The build quality seems solid, and the compatibility with other Greenlee tools adds versatility. However, the kit weighs nearly 46 pounds and is fairly bulky, which could make it less convenient for occasional users or those needing ultra-portable gear. Additionally, while the hydraulic operation simplifies punching, it may require some learning for first-time users.

This product suits electricians or contractors who frequently punch holes in electrical conduit and metal sheets and value durability and a wide punch size range. For casual or light use, the weight and size might be more than necessary.

The Milwaukee M18 18-Volt Lithium-Ion Knockout Tool Kit is designed for professionals needing a reliable, powerful knockout punch tool. With a punch size range from 1/2 inch to 4 inches, it covers a good variety of typical applications, making it suitable for electricians and contractors working on conduit installations. The six-ton force capacity combined with 800 watts of maximum power ensures it can tackle tougher materials like stainless steel, enhancing durability and efficiency during use.

One of its strengths is the cordless design, which allows for greater mobility on job sites. The included two lithium-ion batteries ensure that you have enough power to complete tasks without frequent recharging. The hydraulic mechanism provides smooth operation, which can be a significant advantage over manual tools, reducing the strain during prolonged use.

However, the weight of 48 pounds can be a drawback, especially for users who need to carry it around frequently. While this weight contributes to its durability, it may not be as portable as lighter alternatives. Additionally, the tool’s price point may be higher than basic manual knockout tools, which might be a consideration for those on a tighter budget.

The Greenlee LS100X11SB4 Intelli-PUNCH 11-Ton Battery-Hydraulic Knockout Punch Kit is an excellent choice for professionals working with various materials, including steel, aluminum, brass, copper, fiberglass, and plastics. The kit's hydraulic operation and 11-ton force make it highly effective for punching holes in conduit sizes ranging from 1/2 inch to 4 inches, completing tasks quickly with a maximum cycle time of 8 seconds.

The ergonomic design, featuring a compact profile and tapered grip, ensures ease of use and allows for one-person operation. Additionally, its Auto-Retract Technology enhances tool longevity by retracting the ram after completing the punch. The 360-degree rotating head provides flexibility, making it suitable for punching holes at different angles. This knockout punch kit also includes the convenient Gator Eye feature for monitoring tool performance, ensuring optimal use and maintenance.

The Greenlee LS100X11SB4 is durable, capable of punching up to 10 gauge mild steel or 12 gauge stainless steel, and is backed by a one-year warranty. The kit is relatively heavy at 44.5 pounds, which may limit portability and ease of maneuverability. Also, its high price point can be a drawback for budget-conscious users. Additionally, it requires lithium-ion batteries, which are included but will need replacements over time. Despite these drawbacks, the Greenlee LS100X11SB4 offers exceptional performance and reliability, making it a strong contender for professionals requiring a robust and versatile knockout punch kit.