Check the listing for details. Rubber Sai - Martial Arts / Karate / Ninja Practice Training Weapon - Pair. Condition: New. Listed at 28.95 USD. FREE SHIPPING!! Key Features: Constructed of flexible rubber.Perfect practice weapon.Each sai measures 19-1/2" long.Sold in pairs.BRAND NEW About This Item: Constructed of flexible rubber, these rubber sai are a perfect practice weapon for demonstrating your weapons proficiency while reducing the chance of injury. Each sai measures 19-1/2" long and weighs approximately 5 oz. Sold in pairs. To measure sai: Hold the handle in the hand with the blade extending backward along the forearm toward the elbow. The blade should extend one inch past your elbow. The handle is approximately 5" long. Disclaimer: All weapons are for demonstration or decorative purposes only. If used for demonstration, expert care and supervision should be exercised.