William Optics Star 71 Mark II 71mm f/4.9 APO Imaging Refractor 4 Element Apochromat
William Optics Star 71 Mark II 71mm f/4.9 APO Imaging Refractor 4 Element Apochromat,Stens Mega Fire 435-125 Voltage Regulator Rectifier Replaces Kawasaki 21066-7017 | eBay,1.8550 | 34CrAlNi7-10 +QT Long-term plasma-nitrided – Schmitz-Metallographie GmbH,1.1191 | C45E +QW Hardened at too low temperature – Schmitz-Metallographie GmbH,1.1191 | C45E +QW Hardened at too low temperature – Schmitz-Metallographie GmbH