Badge Hole Slot Punch has approx 3/32 inch jaw opening and designed for up to 40 mil cards. Slot Size (L x W): Approx 13 x 3 mm Puncher Size (L x W). Heavy Duty - Spring Design Adds Extra Strength for clean punches.Visible Knife edge allows for checking the position of the card before punching. Smooth clean punch, Perfect size for badge clipsYour satisfaction is always our top priority. Anything we can help, please contact us freely. Ergonomic handles with a soft grip, reduced much effort, good choice for kids, the aged, craftsman, jewelry maker and any office user. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin