The best selling CarpetPro from Duo Fast is a heavy duty electric stapler that is preferred by professionals for carpet installation. It features a compact design that makes if perfect for stapling under risers and stair upholstery work. Industrial grade quality and reliable performance. Compact design for use under risers and stair upholstery. Long nose for better penetration through the carpet nap. Magazine holds up to 84 staples. Accepts 20 Gauge 3/16" Crown staples from 3/8" to 9/16" in length. For best performance use 5400 series carpet staples. Includes carrying case and staples.