Velocity Boxing Stress Reliever Desktop Speed Punching Ball w/ Pump, Needle, Heavy Duty Suction Cup & Spring Velocity Boxing Stress Reliever Desktop Speed Punching Ball Perfect for Home or Office Stress Relief, Great for Anyone! Stays Securely Attached Hit After Hit! Sticks to Any Smooth Flat Surface! Features a Heavy Duty Suction Cup & Metal Spring Also Includes a Hand Pump Along w/ Inflator Needle Approx. Base Diameter: 7", Overall Height: 14"