Provision of a planar support surface in connection with the central arrangement of the polygon results in a more secure arrest of the tool, leading to {HEAD ~ a firm seating} on {TAIL ~ the shock absorber} closure screw 
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Provision of a planar support surface in connection with the central arrangement of the polygon results in a more secure arrest of the tool , leading to { HEAD ~ a firm seating } on { TAIL ~ the shock absorber } closure screw
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 HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH