Clamp-aid hose clamp end guards help protect you from cuts or injury often associated with unprotected hose clamp bands. These end guards are designed to fit on the exposed "Tail" of 1/2 to 9/16" ( 12 mm-14.3 mm) wide worm gear hose clamp bands.Clamp-aid end guards are available in 6 different colors: Blue, Black, Yellow, Red, Green and Gray.