Features:<br>This training kit is great for beginners or experts who are trying out new helicopters or new set-ups.<br>It helps balances helicopter and it greatly prevents blades<br>or other expensive parts from tilting and hitting the ground<br>or any obstacles, thus saving costly damage.<br>By using the training kit, beginner learn how to safely land RC helicopter with ease.<br>Can be used for 400/450 Helicopter like walkera 36# 60# 68# Align 450SE<br>Length: 33cm <br>Ball diameter: 40mm <br>Package size: 35 * 5 * 5cm / 13.5 * 2 * 2in<br>Package weight: 76g / 2.7oz<br><br>Package list:<br>1 * Training Stand Gear Sponge Ball Kit