1. Blue Point Fasteners .27 caliber Purple/black powder loads, power level 6. 2. 1000 count per box. 3. For .27 caliber strip loads low velocity fastening tools. 4. Be used with heavy duty fastening application. 5. High quality, low residue 6. Precision power range. Caution: these loads are strongest power level, Please carefully read and follow the warning on the load box and fastening tool instruction before using this product. Failure to follow warning and the instruction of tools can result in some serious injury, so please be more careful. Power Level Guide: Power level is designated by the load level number marked on each box, also by the color of the box and each powder load. As the number increases, the power level goes up.