I have 3 20oz tanks so i have 3 on/off values.i think they are very good products that save your air.they come in many colors so they look nice.You just have to turn the knob and the air comes out very helpful. I would get it it helps you and will save u from getting your finger frosted.
Get it it will help you
10 out of 10
Last edited on Monday, June 18th, 2007 at 7:41 pm PST