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