HHAs Optimizer 5510 One-Pin .010 Bow Sight is a CNC-machined-aluminum, single-pin sight that features the Armor pin in a 1-5/8 sight housing and 5 ft. of wrapped fiber optic. Tool-free microadjustable windage for easy sight adjustments and green sight ring for quick target acquisition. Mechanical rheostat allows for pin brightness adjustment for a clear sight picture in any lighting conditions. Accepts lens kit B and Blue Burst sight light. Right hand only. Made in USA. Type: Bow Sights.