Unknown super large heavy Fused Fiber Optic Imaging Conduit Science CDD CMOS sensor tube image intensifier taper rod . There is no model or manufacture . It could be made by Schott Optic . Item is measured 130mm diameter front input faceplate , 45mm diameter output faceplate , 130mm long , weight 16 lbs unpack . The magnifier ratio is about 3:1 . Both input and output faceplace is polished , there 2 tiny light scratches on the front faceplate which can be polished perfect with diamond compound .The test image from this fiber optic taper is very good with high resolution detail . The last picture Schott data sheet is for general reference purpose only , not for this special fiber optic image conduit taper . Thanks for watching the listing of this item .