A staple gun or powered stapler is a hand-held machine used to drive heavy metal staples into wood, plastic, or masonry. Staple guns are used for many different applications and to affix a variety of materials, including insulation, house wrap, roofing, wiring, carpeting, upholstery, and hobby and craft materials. 3-Way Staples - Door-type, U-type, T-type 3-in-1 manual staples are ideal for repair, decoration and fastening to meet your different renovation needs. Widely Used- ideal for re-tacking carpet, upholstery projects (like re-upholstering a chair), carpentry and woodworking, rack, roofing, minor home repairs, fastening two objects The three-way tacker staple gun is perfect for screen repair, picture framing, shelf trimming and other lightweight jobs around the house.