The first and second arms each have a lobe section between their distal and proximal ends, which are resiliently deformable to allow {HEAD ~ movement} of the distal ends relative to {TAIL ~ the proximal ends} of the respective arms 
The first and second arms each have a lobe section between their distal and proximal ends , which are resiliently deformable to allow { HEAD ~ movement } of the distal ends relative to { TAIL ~ the proximal ends } of the respective arms
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 OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH