Improve your hitting placement when you train with the Tandem (R) Volleyball Block Blaster. This package comes with two separate blocking devices that secure to the volleyball net for a controlled block. These two blockers can be used individually or in tandem to improve your spiking and hitting skills. Both blockers are different sizes for training variety. FEATURES: 2 separate blocking devices that are ideal for improving hitting placement Secure to any volleyball net for a controlled block Can be used individually or together Small blocker dimensions: 18" height x 12" width Large blocker dimensions: 18" height x 23" width Manufacturer's warranty: 1 year Model: TSBLOCK For additional information relating to the Manufacturer's Warranty, please contact 1-800-766-1098.