OptiMale Suction Cup Accessory for Endurance Trainer Black. This super strong lever release suction cup is specially designed to fit the OptiMale Endurance Trainer’s proprietary screw on end cap and powerfully adheres to any smooth, non-porous surface. This suction cup was designed for hands free use of your OptiMale Endurance Trainer variable pressure stroker and is ideal for shower, bath use. The strong adjustable arm swivels and bends for custom positioning, and locks into place. Includes complete instructions for use. Features: super strong lever release suction cup. Proprietary OptiMale Endurance Trainer base screws on like end cap. Powerfully adheres to any smooth, non-porous surface. Swivels and bends for custom positioning. Designed for hands free use. Perfect for the shower or bath. Specifications: Color Black. UPC Code 782421062880. Total length 6.50 inches. Width, diameter 3.50 inches. Bulk weight 0.20 pound. Package weight 0.35 pound. Material ABS plastic, PVC. Please note shown with stroker, not included. Sold separately. Video. 18.