connected to a respective sliding sleeve 42 43 each of the sliding sleeves 42 43 have a sleeve like end at their inner ends in the middle of the interior of the hollow handle there is located a flexible activating element 45 that has camming surfaces 44 46 at its outer ends the camming surfaces 44 46 can be overridden or overlapped by each of the sleeve like inner ends of the sliding sleeves 42 43 a centering spring 51 is located inside the flexible activating element 45 and also extends to the insides of each of the sliding sleeves 42 43 the flexible activating element 45 has two outwardly extending protrusions 47 48 which normally are engaged with arresting holes 49 50 at each of the ends of the brush head 1 when it is desired to move the brush head 1 from one end of the elongated handle 2 to the other end the operator can push either push button 40 or 41 whereby either sliding sleeve 42 43 with its sleeve like inner end will ride over either the camming surfaces 44 46 of the flexible activating element 45 to thereby distort the flexible activating element 45 and take the protrusions 47 48 out of engagement with the arresting holes 49 50 at either end of the brush head 1 and release the same to.