Typically, {HEAD ~ side arms} provided on such needle housings are at an angle of 30 degrees relative to {TAIL ~ the axis} of the needle 
Typically , { HEAD ~ side arms } provided on such needle housings are at an angle of 30 degrees relative to { TAIL ~ the axis } of the needle
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH