Gardner Bender® Slug-Out™ Mechanical Knockout Driver

Unprecedented Portability and Power for Precision Hole Punching

We Guarantee to Have the Best Price

What's special about this hole cutter?

  • Just attach this to your 3/8" drill and go to create clean knockouts in metals (up to 10 gauge steel)
  • Works with standard knockout sets and draw studs
  • Portable size saves plenty of space over large, bulky hydraulic assemblies
  • Angled design with dual drive allows more flexibility for awkward applications, ensuring most jobs will be covered
  • Field-replaceable draw stud ensures a smooth workflow
  • Click for More Features

The Slug-Out™ Knockout Driver by Gardner Bender® turns any 3/8" drill into a powerful hole-making device. Simply attach the Slug-Out to your drill, attach any standard knockout and draw stud, and drill as usual for smooth, accurate holes in metals of all types.

Part #DescriptionWeightPrice
GB-KOMD1Slug-Out Knockout Driver
Includes: mechanical driver, case and draw stud
12 lbs
GB-KOM520ASlug-Out Knockout Driver
Includes: mechanical driver, 1/2"-2" knockout set, adapter, step bit, case and draw stud
15 lbs
GB-KOM540ASlug-Out Knockout Driver
Includes: mechanical driver, 1/2"-4" knockout set, adapter, step bit, case and draw stud
38 lbs
  • Heavy duty all-metal construction provides a long service life under rough workout conditions
  • Ideal for creating quality knockouts in electrical, plumbing, HRO, contracting, and other commercial applications
  • Proudly made in the USA US flag


Mechanical Driver Yes Yes Yes
Case Yes Yes Yes
Draw Studs Yes Yes Yes
Adapter - Yes Yes
Step Bit - Yes Yes
Knockout Set - 1/2" to 2" 1/2" to 4"
Dimensions 6" H x 18" W x 19.2" L 6" H x 18" W x 19.2" L 6" H x 18" W x 19.2" L
Weight 11.6 lbs (5.3 kg) 15.8 lbs (7.2 kg) 36.2 lbs (16.4 kg)






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