Sof Rol® White Rayon Undercast Cast Padding, 6 Inch x 4 Yard, 1 Case of 36 Canes Specialty Arch (instep) 17 * HCPC Color:Yellow Arch (instep) 17 * HCPC CODE: E0660 * 6 month limited warranty 0mm specula * Pocket Ophthalmoscope features: 5 aperture selections (small aperture large aperture fixation aperture semicircle aperture and red free filter) * 17 lenses from 20 to +20 diopters for better resolution * Illuminated dial * Silicon coated protection of glass components * Built in lens dust cover * Rubber brow rest prevents scratching of eyeglasses * Ophthalmoscope head made from polymid an impact resistant space age thermoplastic * AA metal battery handle interchanges * making it particularly suitable for use around wounds 100% surgical grade rayon