The PowerShot 5700 Forward Action Staple Gun unique design eliminates squeezing. It shoots 6 types of T50 staples and drives 9/16 in. brad nails. It utilizes 7 types of power shot staples with a 9/16 in. drive. The visual refill window makes checking staple levels convenient. The chamber mechanism allows for easy loading and a contour design offers a comfortable grip. It is a great tool for upholstery, screening, roofing and wiring tasks.. Comfortable grip. Chamber mechanism allows easy loading. T50 staples, 504, 505, 506, 508, 509, 50CT, BN1810 5/8 in. brad nails, 97-030CS 9/16 in. brad nails. Visual refill window allows easy checking of staple levels. PowerShot staples, 97-010, 97-011, 97-012, 97-013, 97-014, 97-015, 97-030. Manual stapler provides portable stapling. Forward-action design eliminates squeezing for easier stapling