The apparatus includes a housing supporting an eraser head and having a cavity in {TAIL ~ fluid communication} with {HEAD ~ a suction device} 
The apparatus includes a housing supporting an eraser head and having a cavity in { TAIL ~ fluid communication } with { HEAD ~ a suction device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD