1/4" 3/8" 1/2" 3/4" 1" 1-1/2" 2" BSPT Female 304 Stainless Window Sight Glass Flow Indicator With Impeller (1/2" DN15) 1/2" DN15 auspowers_batchone Warm note: these small size

Warm note: these small size balls are solid steel

while small

The Phone holder may partially block camera lenses positioned in the rear center of a phone

Beautiful And Practical

1/4" 3/8" 1/2" 3/4" 1" 1-1/2" 2" BSPT Female 304 Stainless Window Sight Glass Flow Indicator With Impeller (1/2" DN15) 1/2" DN15 auspowers_batchone Warm note: these small size1 4" 3 8" 1 2" 3 4" 1" 1 1 2" 2" BSPT Female 304 Stainless Window Sight Glass Flow Indicator With Impeller (1 2" DN15) The single tube impeller type observer, also known as the impeller sight glass, is a necessary accessory to observe the flow of the medium in the pipeline. The impeller sight glass is widely used in industrial production equipment such as petroleum, chemical industry, chemical fiber, medicine, food, etc. It can observe the flow