??FITS ALL EXISTING SHOP VACS Our patented design adapters 1-1/4" 1-7/8" 2-1/2" are adaptable to a variety of shop vacuum cleaners from 1 to 20 gallon. 1-1/4" and 1-7/8" adapters are mainly for mini and middle size shop vac from 1-9 gal, but also for some large size vac like as Stanley SL18701P-10A 10 gal and Craftsman CMXEVBE17656 20 gal. 2-1/2" adapter is for large wet/dry vac from 10 to 20 gallon. The three adapters make this tool compatible with all brands' shop vacuums eg.RIDGID, Vacaster, Dewalt, Armor All, Hart, Krcher | | ??UNBREAKABLE CLEAR HEAD Exclusive patent formula and design make our transparent shampoo head is unbreakable. The see-through head allows you and your