The STINGER HT38 Hammer Tacker is designed for installing roofing felt and rolled insulation. The HT38 is light and easy to maneuver, but constructed with heavy-duty steel for durability. The tool has an anti-slip, ergonomic rubber handle for a firm grip. The tool features a quick-load magazine that holds 168 21 Gauge STINGER 3/8" Galvanized Chisel Point Staples.