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