Green means "go" for accuracy with this punch. Unique EasyView? positioning system turns from red to green when paper is positioned correctly. Soft grip lever handle requires up to 50% less punching effort than conventional punches, making it not only extremely accurate but comfortable and easy to use. Semi-adjustable punch heads for multi-purpose punching. Metal and plastic. Sheet Capacity: 12; Operating Method: Manual; Number of Holes: 3; Hole Diameter: 9/32 in.