Ballista STING Bolts - Pack of 6 16in. The Ballista Sting is the only versatile pistol crossbow bolt on the market with a .244 micro-diameter shaft. No need to compromise between speed accuracy and penetration. You can use Sting bolts with any tips so you have the full freedom to customize. The penetrator insert at the wide part comes in a standard size which allows for any broadhead to be used. You can replace the original aluminum insert with a copper or steel one to increase the bolts weight and achieve your hunting goals. Specifications for Ballista STING Bolts - Pack of 6: Manufacturer: Ballista Diameter: 0.24 in Shaft Length: 11 in Archery Application: Hunting Features of Ballista STING Bolts - Pack of 6 Compatible with Ballista BAT Ballista BAT Reverse crossbows and other pistol crossbows NOT Compatible with Ballista BAT Reverse with Magazine Package Contents: Ballista STING Bolts - Pack of 6 Ballista BAL-BL-03: STING Bolts - Pack of 6 16in