MBDC DRYER KIT Now you easily can convert your MetroVac MASTER BLASTER or AIR FORCE TWIN TURBO to a double cage dryer with this simple kit. Safely dry two dogs at the same time without the dangerous heat that is associated with some cage dryers. The dual cage dryer kit includes the steel Y shaped tube with high gloss black powder coat finish, two 10-foot hoses which can be cut to desired length and two cage dryer attachments.