V-Factor, Eliminates contaminates from entering the crankcase breather hose, Helps to trap any oil mist that normally comes out of the breather hose, Gauze type filter element is easily cleaned, Compact size measures 1 1/2'' long x 2'' O.D., 5 /16-18 button head allen bolt included for mounting.MID-USA. MPN: 65305. Item weight: 1 Lbs. SKU: MOUA-65305 Number of Items: 1