Features: 1.Loose?leaf multi?hole punching, fast positioning and punching by ruler design, compact size, easy to carry. 2.DIY creativing punching, proficient in using methods, customizable punching quantity. 3.The ruler is attached with a scale line to accurately position the edge of the A4/A5/B5 paper. 4.A4/30 holes, A5/20 holes, B5/26 holes can be punched according to requirements. 5.The number of new holes is controlled by the hole position of the limit post. 6.There is a paper scrap box at the bottom, which can conveniently store waste paper scraps after punching. specification:Item Type: Adjustable Hole Punch Material: Iron + plastic Function: Suitable for punching the inner pages of A4 (30 holes) B5 (26 holes) A5 (20 holes) loose-leaf pages, with perforated clip strips, it can be DIY binding to make exclusive report files Size: Approx. 5 x 6.9 x 6.1cm / 2.0 x 2.7 x 2.4in (the size when the punch is opened) Number of Punched Sheets: 5 sheets of A4 paper (once) Punching Depth: Approx. 7mm / 0.3in Punching Diameter: Approx. 6mm / 0.2in Hole Spacing: Approx. 9.5mm / 0.4in Punching Steps: 1. Put the paper into the bottom side and align the corresponding scale, press down the upper cover and make the first hole 2. Push out the limit post positioning and complete the subsequent drilling PackageList: 1 x Hole Punch (with Scrap Box at Bottom) 2 x Positioning Ruler