uxcell 27mm Threaded Metal Case Oil Level Sight Glass Window Silver Tone Product Name : Oil Level Sight Glass;Fit for : Air Compressor Material : Metal;Color : Silver Tone Thread Diameter : 27mm / 1.1";Total Size : 35 x17mm/1.4'' x 0.7'' (Max. D * H) Weight : 31g Package Content : 1 x Oil Level Sight Glass