Comparing apples to apples using cost, accuracy, and features, the CHALLENGER is second to only one in the industry... that is the SURE-LOC SUPREME! The lightweight CHALLENGER features a dependable vertical ocking mechanism that is easy to use. Simply unlock the knob about 1/4 to 1/2 turn for true micro-adjustments of .002" or 2 to 2-1/2 turns to depress the knob and make rapid elevation adjustments. Windage adjustments are also a true .002". The CHALLENGER sights are compatible with all SURE-LOC accessories. The SURE-LOC CHALLENGER offers beginning or experienced archers an entry-level alternative without sacrificing quality. Available in black only.