I HAVE A 2" TRIANGLE ATV SNORKEL AND IT WORKS GREAT I TOTALY SUBMERGED MY RIDE LAST WEEKEND AND HAD NO PROBLEMS IT IS GREAT. ALSO I DIDN'T HAVE TO CUT ANY OF THE PLASTIC ON THE SIDE OF MINE THE ONLY CUTTING I DID WAS THE HOLE IN THE TOP AND THE FENDER WELL UNDER THE FENDER OUT OF SIGHT. IN FACT YOU CAN BUILD YOUR OWN I GAVE A LIST OF PARTS AND SIZES ON ANOTHER POST IN HERE SOMEWHERE. IT WILL COST YOU ABOUT 30.00