PRECISION ADJUSTMENT: Audible one click for every inch-pound adjustment eliminates guesswork when setting the driver to match the manufacturer's specific torque recommendations INCLUDES: Premium storage case and set of 12 1/4’’ inch bits commonly used by leading brands of scope rings & bases for optics mounting. EASY to read scale window and visual, audible click feedback prevents damage from overtightening screws and eliminates guesswork. RUBBERIZED grip and optional Force-Assist driver handle make it effortless to tighten screws and fasteners accurately. Compatible with most rings & bases such as Weaver, Leupold, Warne, Vortex, Zeiss, Sig Sauer, Tract, Nikon, Talley, Seekins Precision, Night Force, Burris, MDT, Steiner, XLR, Ruger, Badger Ordnance etc