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Martin Yale Master® EP312 Electric 3-Hole Punch

Item #: 04MYEP312

Remove the tedious process of manually punching paper for binders by upgrading to the Martin Yale Master® EP312 3-hole punch, a desktop electric hole puncher that will punch through up to 10 sheets* of paper at a time quickly and efficiently. This puncher is lightweight enough to be portable and punch with just one hand, weighing only about 2 lbs. Just place your paper inside and press the button on top of the machine. This office paper punch can be powered by either the included 120 V power cord, or with six AA batteries (not included). It punches standard 3-hole spacing measuring 4 ¼" (center to center) that will ensure compatibility with any regular letter size ring binder.  The holes are a very slightly over-sized 9/32" round that allows for easy page turning and less tearing, and an adjustable paper stop helps you to center your pages. Make punching effortless when you buy the Martin Yale Master® EP312 electric 3-hole punch online.


Product Description


Innovative and affordable, the Master EP312 electric paper punch goes through up to 10 sheets of 20 lb. Bond stock quickly and quietly. Standard features include automatic on/off, adjustable paper guide, and an included AC adapter.

  • Punches up to 10 sheets of 20lb. paper consistently without jamming
  • Very quiet operation
  • 9/32" holes for easy page turning
  • Included AC adapter, optional 6 AA batteries not included
  • Large capacity paper chip pan
  • Adjustable paper guide built into the base
  • Easy to use button on top - just push and punch effortlessly
  • Batteries supply enough power to last more than a year of average use
* Capacity will vary depending on the paper stock being punched. Rating based on standard 20 lb. bond copy paper.


Item # 04MYEP312
Manufacturer Martin Yale
Manufacturer Part Number EP312
UPC/EIN 0-15086-99312-2
Model EP312
Operating Method Electric
Power Voltage 120 V (or Six AA Batteries, Not Included)
Dimensions 11.375" W x 3.75" D x 2.875" H
Capacity 10 Sheets*
Number of Holes 3-Holes
Hole Size 9/32" (0.28")
Hole Spacing 4 ¼"
Maximum Number of Heads 3
Punch Heads Included 3
Adjustable Margin Depth No
Maximum Margin Depth 7/16" Max
Product Weight (lbs) 2.2
Shipping Weight (lbs) 4

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