VOLLEYBALL BLOCK BLASTER : Use the Tandem Sport Volleyball Block Blaster for hitting placement or as a coverage tool in volleyball drills such as blocking, hitting, or coverage CONTROLLED BLOCKING: Volleyball Training Aid that consists of 2 separate volleyball blocking devices that secure to the volleyball net for a controlled block every time EASILY ATTACHES TO NET: Dual blocking devices that easily attach to the volleyball net and can be used in tandem or individually NYLON & STEEL: This volleyball training equipment is made of nylon netting and a sturdy metal frame, the 2 blocking areas measure 18” x 12” and 18” x 23” QUALITY SPORTS GEAR SINCE 1989: Tandem Sport has been manufacturing and distributing quality volleyball, sports medicine, equipment and training devices to the sporting goods market since 1989