OUR KIT CONSISTS OF A 3/8 BRAIDED POLYURETHANE HOSE FOR A MORE POWERFUL CLEANING TOOL. WE USE THE BRAIDED 3/8 HOSE FOR RUGGED INSIDE CAB CLEANING APPLICATIONS. MOST BLOW GUN KITS ARE 1/4 INCH AND MIGHT NOT BE STRONG ENOUGH TO FULLY CLEAN INTERIOR CABS .