Aluminum Oil Level Sight / Oil Sight Glass / Oil Level Sight Glass / Oil Level IndicatorSize: M10x1, M12x1.5, M14x1.5, M16x1.5, M20x1.5, M24x1.5, M27x1.5, M42x1.5, G 3/8, G 1/2, G 3/4, G 1 NPT 3/8, NPT 1/2, NPT 3/4, NPT 1, etc. Thread: METRIC, BSP, BSW, BSF, NPT, NPS, UNF, UNS, SAE, DIN.Material: Aluminum / Glass.Size, thread or other specifications can be designed according to your demand. They're widely used for Pump Gearboxes, Speed Reducer, Compressor and Power Transmission and so on.

Steel Oil Level Sight / Oil Sight Glass / Oil Level Sight Glass / Oil Level IndicatorSize: M10x1, M12x1.5, M14x1.5, M16x1.5, M20x1.5, M24x1.5, M27x1.5, M42x1.5, G 3/8, G 1/2, G 3/4, G 1 NPT 3/8, NPT 1/2, NPT 3/4, NPT 1, etc. Thread: METRIC, BSP, BSW, BSF, NPT, NPS, UNF, UNS, SAE, DIN.Material: Carbon Steel, Alloy Steel.Size, thread or other specifications can be designed according to your demand.

Stainless Steel Oil Level Sight / Oil Sight Glass / Oil Level Sight Glass / Oil Level IndicatorSize: M10x1, M12x1.5, M14x1.5, M16x1.5, M20x1.5, M24x1.5, M27x1.5, M42x1.5, G 3/8, G 1/2, G 3/4, G 1 NPT 3/8, NPT 1/2, NPT 3/4, NPT 1, etc. Thread: METRIC, BSP, BSW, BSF, NPT, NPS, UNF, UNS, SAE, DIN.Material: Stainless Steel 304 / A2, 316 / A4.Size, thread or other specifications can be designed according to your demand. They're widely used for Pump Gearboxes, Speed Reducer, Compressor and Power Transmission and so on.