Portable 3-hole punch is a perfect fit for most 3-ring binders, complete with clip-in rings, so the hole punch stays put. Punches 1/4 standardized holes. Convenient for use as a ruler as well. Four fun colors mean that you'll find the perfect shade for you; comes in purple, lime, blue and black.
Save space with our flat 3 hole punch for binder use, which features two loops for easily clipping into a 3 ring binder or storing flat in a desk
Blue Summit Supplies Set of 3 Hole Punch for Binder, Plastic Portable Ruler with Hole Puncher for Binder or Notebook, Easy to Use Flat Hole Punch for
Hole punch - Wikipedia
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Eagle 3 ring binder hole punch is designed perfectly for standard 3 ring binders. It is portable, and its slim and compact design allows it easily fit
Eagle 3 Hole Punch, Portable Ring Binder 3 Hole Punch, Paper Puncher with Integrated Ruler, 5 Sheets Capacity, for Ring Binders, Office and School
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A well plate–based multiplexed platform for incorporation of organoids into an organ-on-a-chip system with a perfusable vasculature
3 Hole Punch Blue, Portable Hole Puncher for 3 Ring Binder, 3 Sheets Capacity, Removable Chip Tray, 10” Ruler for School, Office, Also Available in Purple, Pink, Green, Red, Grey, 1
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JAM PAPER Metal 3 Hole Punch, 10 Sheet Capacity, Black (345BL