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