Includes 4 tips, 1 1/2" , 1 3/4" , 2", and 2 3/4". Standard 2 1/2" swivel joint. Gauge is 3 1/2" Span, glycerin filled, 0-160 psi. Gauge swivels 360 degrees for easy reading. Measures flows between 151-1851 GM @30-120 PSI. Pitot tip is held firm in correct position. Kit includes heavy duty carrying cases, instructions and flow chart. Tips are hard coated aluminum, all other parts are brass or chrome plated.