Improve arm speed and javelin throwing technique. Different weight balls are priced differently.
Get enough so all of your throwers can work out together.
About Javelin Nockenballs:
Use these balls to improve your technique & arm speed.
Grip around the knob like a javelin.
Use for indoors and/or outdoors – these will not damage or break floors.
Choose from these weights:
400 gram ( .88 lbs)
600 gram (1.32 lbs)
800 gram (1.76 lbs)
2 year replacement warranty.
Different weights are priced differently.