The Borka Tools Precision 4, 8 Torque Limiter Kitis designed for Nightforce and Vortex turret set screws. Includes4 inch-lbs. precision torque limiter (PTL)8 inch-lbs. precision torque limiter (PTL)PTL Gear - Knurled Drive Adapter(2) 5/64" Hex, (1) 1.5mm, (1) Torx 6, and (1) 1/16" - 1" long bits4" Long Screwdriver Bit ExtensionPTL InstructionsPTL Calibration Certificate of AccuracyTough, Impact Resistant Case with Custom foam for Borka Tools