Borka Blades Standard Config. Adjustable Torque Driver Kit. The Borka Standard Configuration Kit delivers professional grade torque control in a compact rugged package. Complete Kit Contents: Adjustable Torque Driver Calibrated to an accuracy of 4percent. Compact Ratchet Handle: 1/4" hex (F) x 1/4" square drive (M). Adapters & Extension: 1/4" hex drive (F) to 1/4" square drive (F) adapter 1/4" hex drive (M) to 1/4" square drive (M) adapter 2" extension with 1/4" square drive (M and F) ends 1/2" hex socket with 1/4" square drive (F). 29 Premium S2 Tool Steel Chrome-Plated Bits: Hex Inch: 3/32 7/64 1/8 9/64 5/32 3/16. Hex Metric: 2 2.5 3 4 5 6. Slotted: 1/8 5/32 3/16 7/32 1/4 5/16. Torx: T-10 T-15 T-20 T-25 T-27 T-30. Phillips: #1 #2. Spare Torx Bits: Extra T-10 T-15 T-20 (stored in labeled Special Bits slots SPB#13). Maintenance Essentials: Mohair lens brush Instruction guide sheet with quick-start info and video links. Cordura Nylon Pouch Heavy-duty 8" x 5.5" x 2" case keeps everything organized and protected Total Weight: 1 lb. 6 oz. Key Advantages: True 4percent torque calibration accuracy for repeatable precise fastener tension Lightweight portable design for on-the-go gunsmithing optics installation and field maintenance. Specifications for Borka Blades Standard Configuation Adjustable Torque Driver Kit: Manufacturer: Borka Blades Weight: 22 oz BORKA BTK-ST STD CONFIG ADJ TORQUE DRIVER KIT BTKST Borka Blades BTK-ST: Standard Config. Adjustable Torque Driver Kit