Features: The labor-saving design allows you to staple 20 sheets of papers max. with less effort. With a ruler, the hole spacing can be adjusted in the range of 15-80mm, which can be adapted to different Specifications of the storage folder. Standard 4 holes can be punched in A4 paper, easy to fit the regular binder. A paper collecting space is designed at the bottom of the hole punch, which is convenient to clean up after using. Independently cast metal cutter head, sharp edge, strong and durable. Specification: Model: 9176 Color: Black, White (Optional) Size: 145.55 x 68.1 x 18mm/5.7 x 2.7 x 0.7in Hole Diameter: 6mm Adjustable Distance of Hole to Hole: 15-80mm Package Size: 22 x 11 x 3cm/8.7 x 4.3 x 1.2in Package Weight: 186g/6.6oz Packing List: 1 x Hole Punch Kit