Features: Made of durable high-impact plastic and suitable for any age. Visual acuity test built-for-purpose tools. Description: Lorgnette Occluder Multi Occluder Optometry Instrument Tool Item Specifics: Lorgnette occluder Color : Black Material : ABS plastic Size : As the picture show Package Included: 1Pcs Hand Occluder 1Pcs Eye Test Chart Note: 1.Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid. 2.The colors may have different as the difference display, please understand.