This two paddle version has one paddle with plus lenses and a second paddle for the minus lenses. Optics on both are 0.5, 1.0, 1.5. 2.0, 2.5, 3.0, 3.5, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 12.0, and 15.0. Lenses are 16mm (1/2 inch nominal) diameter and are recessed to help prevent scratching. Lenses are glass for greater accuracy and durability. Comes with nylon sheath. Each stick is approximately 11 in (28 cm) long and 1 3/4 inch (5 cm) wide.