{TAIL ~ The race} 320 extends and converges in {HEAD ~ width} from the second end surface 312 b to the vertical notch surface 318 b 
{ TAIL ~ The race } 320 extends and converges in { HEAD ~ width } from the second end surface 312 b to the vertical notch surface 318 b
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH