Specification Brand : Mars Label : Mars International Manufacturer : Mars International NumberOfItems : 1 PartNumber : MI-5775 ProductGroup : BISS Basic ProductTypeName : LAB_SUPPLY Publisher : Mars International SmallImage_Height : 65 SmallImage_URL : https://m.media-amazon.com/images/I/31kFbrn6SpL._SL75_.jpg SmallImage_Width : 75 Studio : Mars International Title : Mars International Welch Allyn 3.5V Streak Retinoscope Head Only Ref No. 18240