{HEAD ~ A training device} for acquiring the correct hand motion associated with the different types of sport and for strengthening the wrist and {TAIL ~ forearm} 
for strengthening
{ HEAD ~ A training device } for acquiring the correct hand motion associated with the different types of sport and for strengthening the wrist and { TAIL ~ forearm }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL