A threaded pipe coupler that connects two 1.5" NPT threaded columns together for added length. Certifications: UL Listed. Color: White. Overall Dimensions (H x W x D):2.1" x 2.2" x 2.2" (53 x 56 x 56mm). Shipping Weight:2.00 lbs. Weight Capacity:500 lbs (226.8 kg) Connects two extension columns for extended length applications. Two set screws included for security and stability 2.06" (52mm) height added to installation Color: White Features: Connects two extension columns for extended length applications.