Not enough space to throw the javelin? That's not a problem with the Gill(R) Nocken Ball. Designed to simulate the feel of throwing a javelin, nocken balls can be safely used indoors to make sure your training schedule isn't interrupted. Weight: 600 g / 1.3 lb. FEATURES: Javelin training tool Simulates the feel of throwing a javelin Safe to use indoors Weight: 600 g/1.3 lb. One-year manufacturer's warranty Model: TA100 For additional information relating to the Manufacturer's Warranty, please contact 217-367-8438.