Description: This is a double bar jackhammer pogo jumper, the shaft is made of iron alloy, which is very solid and durable. The pedal also has an excellent anti-skid effect, it can help your child not easy to fall down. The spring is made of high quality manganese steel which is very solid and durable. It has four functions, such as fitness training, lose weight, balance training, and help your child grow faster. Hope you can enjoy your playing. Specifications:Material: Iron Alloy + High Quality Spring Color: Blue, Orange (Optional) Weight: approx. 2.6kg Maxmium Load Capacity: approx. 40kg Type: Double Bar Suitable Ages: 7-12 years old Total Length:approx.100cm / 39.3" Bar Length: approx. 30cm / 11.8" Pedal Length: approx. 28cm / 11" Quantity: 1pc Package Included: 1 x Jackhammer Jump Stick Note: 1. Safety protections are needed before using. 2. For the safety of you or your children, please use it on flat ground. Do not use it on a slope or uneven floor. 3. Children must be supervised / guided by their parents while using. 4. Please allow 1-3cm error due to manual measurement. Thanks for your understanding.5. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please in kind prevail.