- Everything you need to get hard and stay hard! American Pumpers Association - ABS (cylinder. release valve) TPR (donut. masturbator) Silicone (rings) Phthalate-Free PVC (hose) Rubber (bulb) PP (controller) ABS with Silver Plating (stimulator) Kit Includes - Sta-Hard erection pump with flanged base for secure seal - Soft and stretchy removable donut - Easy squeeze bulb w/ quick air release valve - Silicone rings in 2 sizes - Tight and stretchy ribbed stroker - Multi-speed vibrating stimulator Size 8 x 2/20.25cm x 5cm