The Martin Yale Master® MP40 3-Hole Punch will punch through as many as 30 sheets* at a time with standard three-hole spacing for ring binders and more. The slightly over-sized 9/32" holes make for easy page turning while the standard hole spacing of 4 ¼" (center to center) ensures compatibility with any standard US letter size binder. Made of all steel, the MP40 puncher is durable enough to be used daily by multiple users, making it a good choice for an office environment. It has a full sized handle that spans the entire width of the punch and is padded, offering unique comfort for the user, which is great for when it is used frequently. A non-skid bottom keeps the office puncher firmly on your work space during punching, and an adjustable paper guide lets you perfectly center your pages. Buy the Martin Yale Master® MP40 3-Hole Punch online from Binding101 and bring comfort and usability to your office.