The trial frame can accommodate up to four pairs of lenses. Designed for ease of use and comfortable wear, it features a changeable cylinder axis with fully adjustable temple length and nose rest. Includes horizontal and vertical bridge adjustments. This optical trial lens frame allows for accurate refraction of even the most complex prescriptions and provides comprehensive adjustments for a proper, comfortable fit. Features: - Accommodates up to four pairs of lenses - Separate PD adjustment for each eye - Individual temple length adjustments - Rotating cylinder adjustment - Graduated scales with numerals - Material: metal or plastic - Lens holder diameter: 38mm - Pupillary distance (PD) adjustment range: 48–80mm Package Content: 1 x Trial Frame Note: Lighting and monitor settings may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1–3 cm.