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Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"
Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3" Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

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Product details

Management number 210029860 Release Date 2026/04/02 List Price US$122.70 Model Number 210029860
Category
  1. Tools & Home Improvement
  2. Power & Hand Tools
  3. Hand Tools
  4. Punches
  5. Knockout Punches

Gardner Bender four-point knockout punches and dies are designed to punch clean, round holes through 10-gauge mild steel, 12-gauge stainless steel or other soft metals up to .135 inches in thickness. Punches and dies are interchangeable, in any combination, with most brands of knockouts. This kit includes punch, die, drive screw and drive nut to punch a whole diameter sufficient for 3 inch conduit; actual hole diameter is of 3.542 inches. Additional sizes are available to specifically permit fast and easy installation of electrical conduit and pipe of nominal sizes 1/2" through 4", in all commonly available increments.

  • Four-point punch design allows slug to fall free from the die without splitting, tapping or prying
  • Interchangeable with most tool brands
  • Punches 10 gauge mild and 12 gauge stainless steel
  • Punches hole designed for 3 Inch pipe or conduit
  • Actual hole diameter 3.542 inches
UPC 032076813536
Color Black
Brand Name Gardner Bender
Unit Count 1 Count
Item Weight 5.4 Pounds
Sheet Count 10
Manufacturer Gary Cooper Publishing House
Material Type Alloy Steel, Stainless Steel
Operation Mode Mechanical
Pin Hole Diameter 3.54 Inches
Global Trade Identification Number 00032076813536

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

Gardner Bender KOM300 Slug-Out Mechanical Knockout Set, Contractor Punch, Die & Drive Screw Set, Conduit Pipe Size Cutting Diameter, 3½" Hole Size, Punches 10 AWG Mild Steel & 12 AWG Stainless Steel, 3"

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