DENEST 4 units,optical flip,optical plastic flip, trial lens, plastic confirmation flip, eye flip optical instrument (4 pieces/set (± 0.50, ±1.00, ±1.50, ±2.00))

FEATURES: Color: White Material: Plastic Length: 21mm Excellent quality and favorable price. Humanized design: The handle has two grooves, antislip design and easy to hold. Workmanship: Thick and solid lenses and rim;Each degree shown close to the lens. Size: Bigger size than ordinary flippers enables easier use and more clear measure. The item contains 4 units plastic confirmation flippers: +/-0.50 D, +/-1.00D, +/-1.50 D, +/-2.00 D

Features: ★Humanized design: The handle has two grooves, antislip design and easy to hold. ★Workmanship: Thick and solid lenses and rim;Each degree shown close to the lens. ★Size: Bigger size than ordinary flippers enables easier use and more clear measure. ★Professional technical, precise lens power ★The item contains 4 units plastic confirmation flippers: +/-0.50 D, +/-1.00D, +/-1.50 D, +/-2.00 D.