3M Cavity Wax Plus Applicator Wand Kit 08851 allows body shop technicians to apply 3M Cavity Wax Plus in hard-to-reach places such as internal door skins and frame rails. The kit includes 24??and 34??wands with built-in 360-degree spray nozzles, and an 8??wand for flooding seams. Cavity wax is part of the internal corrosion protection recommended by all OEMs during automotive collision repair.