KW-triO 0999D Metal 4-Hole 10 Pages/sheets Punch Machine with a metal cover having a free hole distance with adjustable hole distance. Punches up to 10 sheets. 7 mm hole diameter. Depth (Paper Insertion) of 12 mm. Adjustable punching heads. Metal construction with sturdy metal handle. Removable chip tray. Adjustable 4 punch heads allow for various punching combinations i.e., adjustable to 3 holes punching or 4 holes punching. Product Dimensions: 11.33 x 2.48 x 1.57 Inches / 288 x 63 x 40 mm