Shrewd Optum Sunshade

Shrewd Optum sunshades are CNC machined from 6061 aluminium. Optum 40mm Optum 35mm Optum 29mm Threads into either side of the 40mm Optum scope Available in four options: 1-STEP: DOES NOT REDUCE INSIDE DIAMETER, FEATURES A WHITE CENTERING RING 2-STEP: REDUCES INSIDE DIAMETER TO 35MM, FEATURES TWO WHITE CENTERING RINGS LONG: DOES NOT REDUCE INSIDE DIAMETER, FEATURES AN INTERNAL TAPER TO ELIMINATE TUNNEL EFFECT METAL DECAL RING (MDR): DOES NOT REDUCE INSIDE DIAMETER, FEATURES FLAT WHITE CENTERING RING. Threads into the eye side of the 35mm Optum scope Available in four options: 1-STEP: DOES NOT REDUCE INSIDE DIAMETER, FEATURES A WHITE CENTERING RING 2-STEP: REDUCES INSIDE DIAMETER TO 29MM, FEATURES TWO WHITE CENTERING RINGS LONG: DOES NOT REDUCE INSIDE DIAMETER, FEATURES AN INTERNAL TAPER TO ELIMINATE TUNNEL EFFECT. ONLY THREADS INTO TARGET SIDE OF 35MM OPTUM SCOPE. METAL DECAL RING (MDR): DOES NOT REDUCE INSIDE DIAMETER, FEATURES FLAT WHITE CENTERING RING. Threads into the either side of the 29mm Optum scope Available in three options: 1-STEP: DOES NOT REDUCE INSIDE DIAMETER, FEATURES A WHITE CENTERING RING LONG: DOES NOT REDUCE INSIDE DIAMETER, FEATURES A LARGE INSIDE DIAMETER TO ELIMINATE TUNNEL EFFECT. METAL DECAL RING (MDR): DOES NOT REDUCE INSIDE DIAMETER, FEATURES FLAT WHITE CENTERING RING.