Apollo Sta-Hard Kit from California Exotics. "Everything you need to get hard and stay hard!" - American Pumpers Association. 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. ABS (cylinder, release valve) TPR (donut, masturbator) Silicone (rings) Phthalate-Free PVC (hose) Rubber (bulb) PP (controller) ABS with Silver Plating (stimulator). 7.75" x 2.25"/19.75cm x 5.75cm (cylinder). 2.25" x 1"/5.75cm x 2.5cm (stimulator). 3.25" x 1.5"/8.25cm x 3.75cm (masturbator). 1.5"/3.5cm (medium ring). 1.75"/4.5cm (large ring). Requires 2 AAA Batteries.