Ballista BAT Reverse String Replacement Tool Lightweight. By placing the arches onto the pulleys and applying slight pressure you can easily change the string or cables. Depending on the placement direction the device can either relax the limbs to facilitate string replacement or allow for cable replacement. With this replacement tool you can conveniently work on your crossbow wherever you are. Specifications for Ballista BAT Reverse String Replacement Tool: Manufacturer: Ballista Color: Black Weight: 0.4 lb Fabric/Material: Aluminum Finish: Gloss Features of Ballista BAT Reverse String Replacement Tool For BALLISTA BAT Reverse Not compatible with BALLISTA BAT Fast and Easy to use Lightweight Tool for changing string and cables Allows you to work on your crossbow at home or in the field Package Contents: Ballista BAT Reverse String Replacement Tool Ballista BAL-AC-08: BAT Reverse String Replacement Tool Lightweight