The hand held device has a motor powered by water supplied under pressure, {HEAD ~ which motor} operates {TAIL ~ a rotary brush} lubricated by water flowing through the motor 
operates
The hand held device has a motor powered by water supplied under pressure , { HEAD ~ which motor } operates { TAIL ~ a rotary brush } lubricated by water flowing through the motor
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH