Best Knockout Punches Under $50 (2026)

We ranked knockout punches under $50 by a value score combining verified user ratings, price, thread compatibility (3/4-16 UN), hole size options, and build materials

Top Picks

  1. 1
    AMZCNC conduit punch and die for 3-1/2" - 3/4"-16UN

    AMZCNC conduit punch and die for 3-1/2" - 3/4"-16UN

    AMZCNC • ★ 3.9/5 • Budget

    Conduit punch and die set for hydraulic KO drivers with 3/4-16UN thread. Supports 3/8"? actually 3-1/2" conduit hole size and 4.04" actual hole. Punching force 12 tons; suitable for steel and stainless panels. Customers note good quality and value; mixed views on size compatibility

    • 3-1/2" conduit capacity
    • 3/4"-16UN thread compatibility
    • suitable for steel and stainless punching
    Check current price on Amazon →
  2. 2
    Conduit punch and die for hydraulic KO driver 3/4-16UN

    Conduit punch and die for hydraulic KO driver 3/4-16UN

    AMZCNC • ★ 3.9/5 • Mid-Range

    Conduit punching die set for hydraulic knockout drivers with 4 in hole capacity and 4.54 in actual hole size. Supports 12 ton punching force and 3/4-16UN draw stud. Customers note good quality and value; works with various hydraulic punch units

    • 4" conduit hole capacity
    • actual hole 4.54"
    • 3/4-16UN thread compatibility
    Check current price on Amazon →
  3. 3

Buying Guide

Match thread and driver size

Confirm the punch die matches your driver thread (common 3/4-16 UN on these picks) to ensure proper fit and safe operation

Choose the right hole diameter

Select a die sized for the conduit or knockout hole you need — options here include roughly 3-1/2 in and 4 in diameters for larger openings

Check material and finish

Look for hardened steel or plated finishes to resist wear and corrosion during repeated punching tasks

Assess compatibility with hydraulic tools

If using a hydraulic punch, verify the die is rated for hydraulic use or compatible with your hydraulic adapter to avoid damage

Consider user rating and value

Factor in user ratings (around 4.6★ for the top picks) alongside price to balance performance and cost for routine electrical work