Oct 12, 2018 305 and 306 Square Drop Lenses Oct 12, 2018 310 and 320 Ovate Refractors Oct 12, 2018 424 The Lindy® Oct 12, 2018 240, 245, 250 and 255 Refractors Oct 12, 2018 260, 265, 270 and 275 Tapered Refractors Oct 12, 2018 280, 285, 290, 295 and 297 Dusk-to-dawn Refractors