The STA design was developed for a friend of Greg’s and former Marine Corps sniper. He wanted a simple edge design to accommodate the largest number of varied users and some typical tools he often saw used in the field doing the scout sniper training. 1. ½” pommel wrench 2. Flat blade driver hilt and #. TLR (Through Looking Range Finder) good out to 400 yards/meters with minimal practice and the batteries will never wear out!