Optometry Optician Fully Adjustable Trial Frame Optical Trial Lens FrameThe product will be shipped based on the color or size of the main image of the product page. Features: 100% Brand new and high qualityBrand new optical trial lens frame, offers the ability to break even the most difficult prescription and offers all the adjustments to ensure a proper and comfortable fit on your patient Range of PD adjustments: PD of both eyes: 48~80mm; left or right PD: 24~40mm; Minimum graduation value: 1mm Division axial disc graduation: Left separating disc: 120 ~ 0 ~ 135 Right divided disc: 45 ~ 180 ~ 60 Axial graduation increases counterclockwise along the lens frame axis, and the graduated distance is 5. Lens frame inner diameter: 32.5mm. Number of lenses that can be placed in the left or right lens frame at the same time:4 piecesDegree of lens rotating around the optical axis in the lens frame:360Non-parallelism between lens&39;optical axis and lens frame&39;geometric axis:2.5Non-concentricity between lens&39;optical center and lens frame geometric center:0.5mmdisplacement of the lens in relation to the position of the lens frame geometric center:0.3mm range of nose pad adjustment: length: 0~14mm; Angle: 0~30Range of left or right lens frame Leg &39; Length Adjustment: 98~135mm. Maximum interval between left and right lens frame legs: 200mmSpecification: Material: Alloy or PlasticColor: Black+SilverSize: 14.5*6*3.5cmNet Weight: 68gPack Weight: 78gPackage Included: 1x Trial Frame