Volleyball Spike Trainer, Adjustable 40"-71.6" Volleyball Hitting Trainer, Double Arc Protection Quick Pickup Volleyball Spike Aids with 3 Replacement Bandages, Black

【Highly Adaptable To Volleyballs】 High quality metal material adaptable to volleyballs size 4-5. Comes with 3 replacement adjustable fixed position premium bandages. Double curved area with EVA non-corrosive durable rubber for strong fixation from the inside out. Essential for most volleyball training scenes. 【Multi-trainer Adaptation】 With these 4 lengths to choose from, just rotate to install four metal poles to your desired length. Adjustable pole length from 40" to 71.6", support different training requirements from beginners to professional athletes. Also comes with fixing glue to fix it as needed. This Volleyball Spike Trainer facilitates trainers to accelerate the improvement of their spiking technique for more effective training. 【Double Arc Volleyball Cushion】The 2 sides are specially designed to hold the volleyballs in place with high density EVA cushions. The inner side of the cushion is equipped with solid metal support, which is more stable than ordinary volleyball retain