Dependable spring-up covers work on both the ocular or objective end of your scope. The covers have tabs on both sides of the lid to be easily opened by right or left handed shooters. Blizzard lenses are made from optical grade polymers that achieve the most complete light transmittance of all see-thru covers. See-thru protection gives you the ability to make fast, off-hand shots at fleeing game. Always open the covers for long-range shooting. Clear lens color. Cover size of 1.5 - 1.59 inch.