No matter who you are, when you do a lot of punching, there’s no doubt it gets tiresome. Say goodbye to sore hands with the Bostitch electric hole punch. Punching up to 12 sheets with the push of a single button, our automatic hole punch is here to bring you ease. This electric 3 hole punch suits any executive, administrative or home office user. Electric or portable battery operation offers you effortless punching wherever you are. Power the unit for wireless use with 6 AA batteries (sold separately). Precision steel punch heads deliver clean punching of 12 sheets of paper at a time. The punch heads are a standard 9/32" width. You can accommodate various sized documents using the integrated adjustable paper guide for perfect hole placement every time, no matter the size of the paper. Each electric hole punch also features a chip drawer to keep your work area clean. To use this unit, insert your stack of papers into the unit's opening. The electric mechanism will trigger, punching a perfect set of holes in your document. It's that easy! Each item features a black and silver design for a professional and polished look!