It should be noted that the drawings are schematic and conceptional, and the relationship between the thickness and the width of each part, and the ratio in {HEAD ~ size} between {TAIL ~ the parts} do not necessarily match the actual ones 
It should be noted that the drawings are schematic and conceptional , and the relationship between the thickness and the width of each part , and the ratio in { HEAD ~ size } between { TAIL ~ the parts } do not necessarily match the actual ones
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH