Master EP312 Hole Punch by Martin Yale
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Master EP312 Hole Punch by Martin Yale

Part #: EP312
Brand: Master
  • Designed for easy use and hand held operation if desired
  • Enough power to last more than one year of average use
  • Easy to use button on top- just push and punch effortlessly
  • Easy to use button on top- just push and punch effortlessly
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Product Description

This Master EP312 Hole Punch by Martin Yale can punch 10-sheets of paper consistently without jamming. It is designed for easy use and hand held operation if desired. Has enough power to last more than one year of average use. The Master EP312 Hole Punch has an easy to use button on top- just push and punch effortlessly. Punches 9/32" holes, fitting a standard 3-ring binder allowing for easy page turning with less tearing, adjustable paper guide built in base, also has a large chip holder and operates with 6AA batteries (not included) or 120v power transformer (included).

Product Details

  • Designed for easy use and hand held operation if desired
  • Enough power to last more than one year of average use
  • Easy to use button on top- just push and punch effortlessly
  • Punches 9/32" holes, fitting a standard 3-ring binder allowing for easy page turning with less tearing
  • Adjustable paper guide built in base, also has a large chip holder
  • Operates with 6AA batteries (not included) or 120v power transformer (included)

Item Specifications

  • Hole Diameter: 9/32"
  • Number of Holes: 3
  • Sheet Capacity: 10
  • Battery Operated: 6 AA batteries (not included)
  • Electrical: 115v power supply (included)
  • Product Dimensions: 3.8 L x 11.4 W x 2.1 H in (10.0 x 29.0 x 5.0 cm)
  • Warranty: 180 Day Manufacturer's Warranty (Extended Warranties Available)
  • Product Weight: 2.2 lbs (1.0 kg)

Demonstration Video

Master EP312 Hole Punch by Martin Yale

Transcript: Welcome to MyBinding Video. This is the Master EP312 Electric 3-Hole Punch by Martin Yale. This lightweight electric hole punch makes 3 perfectly round holes through 10 sheets of 20 pound paper consistently without jamming. A power adapter plugs into the rear of the machine for AC power, or it can be battery operated with six AA batteries for over 3000 punches. An edge guide is built into the side of the punch throat and has two settings. Just insert your pages and press the grey button on top to engage the punch motor. Underneath the machine are the cover doors for the battery compartment and ... Read More
Welcome to MyBinding Video. This is the Master EP312 Electric 3-Hole Punch by Martin Yale. This lightweight electric hole punch makes 3 perfectly round holes through 10 sheets of 20 pound paper consistently without jamming. A power adapter plugs into the rear of the machine for AC power, or it can be battery operated with six AA batteries for over 3000 punches. An edge guide is built into the side of the punch throat and has two settings. Just insert your pages and press the grey button on top to engage the punch motor. Underneath the machine are the cover doors for the battery compartment and the chip receptacle. Master offers a 1 year warranty if you have any problems with the machine. If you find yourself needing a two hole punch as well, take a look at the Master EP323. For more videos and all your binding needs, visit MyBinding.com.

Compare to Similar Paper Punches


Model Number Model Hole Diameter (inch) Number of Holes Capacity (sheets) Battery Operated Electrical (volt)
EP312 9/32" 3 10 Optional 115
EP323 9/32" 2 or 3 12 Optional 115
DP20 9/32" 2 or 3 20 No Manual
MP3 9/32" 3 20 No Manual
MP40 9/32" 3 30 No Manual
MP50 9/32" 3 40 No Manual
3020B 9/32" 2 or 3 30 No Manual
325B 9/32" 2 to 7 24 No Manual
5325B 9/32" 2 to 7 32 No Manual
5335B 11/32" 2 to 7 32 No Manual
5340B 13/32" 2 to 7 32 No Manual
525M 11/32" 2 to 7 40 No Manual
1325B 9/32" 2 to 7 40 No Manual
1340PB 12/32" 2 to 7 40 No Manual
MP80 9/32" 3 80 No Manual
EP210 1/4" 2 12 Optional Manual
MP250 9/32" 2 40 No Manual
3275B 9/32" 2 40 No Manual

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