Features: 1.3 kinds of rounded corners can be cut, the rounder is used to trim the right angles of jammed paper/photos into rounded corners. 2.3 in 1 for corner cutting and chamfering machine, R4 / R7 / R10mm cutting size, 0.4mm thickness cutting and 3 sheets of A4 paper per shot. 3.Using lever type handle structure, round corner cutting is light and labor?saving. 4.Small size, easy to carry and store, convenient to use and with good performance. 5.Can cut all kinds of paper, used for business cards, heat shrinkable films, greeting cards, plastic photos, photo hand accounts, DIY hand-made, etc. specification:Item Type: Corner Rounder Punch Material: ABS+iron Function: Can cut all kinds of paper, used for business card, heat shrinkable film, greeting card, plastic photo, hand account DIY manual, etc. Size: Approx. 7 x 6 x 3.4cm / 2.8 x 2.4 x 1.3in Three Different Sizes of Rounded Corners: R4, R7, R10 Cutting Thickness: Approx. 0.4mm / 0.02in Can print 3 sheets of A4 paper at a time Use skills: Align the paper with one hand at the corner and press with one hand How to Use: 1. Insert the edge of the paper 2. The sharping corner must be placed in the vertex nipple 3. Press the handle to cut PackageList:1 x Corner Rounder Punch NoteManual measurement, for reference only.