The Adult Pro-Jump M-Series Moulded to Bolt-On Feet Conversion Kit features the following specifications... Suitable For - The Adult Pro-Jump M-Series Moulded to Bolt-On Feet Conversion Kit is designed to fit the Adult Pro-Jump M-Series bouncy stilts as a replacement part Compatible With - This part MAY also be compatible with other brands of Powerbocks (however we can not guarantee this) including PoweriZer, PowerStrider, Fly Jumper, Jolly Jumper, Air Trekker, Air Runner, Speed Jumper, PowerStrider, 7 League Boots, PowerSkip and PoweriSer. If you are unsure after checking the photos and description, the Pro-Jump Forum (search Google) may be able to advise if you post photos of your Jumping Stilts. Quantity Supplied - One Adult Pro-Jump M-Series Moulded to Bolt-On Feet Conversion Kit is supplied which contains the parts required to replace the feet on a pair of stilts: i.e. two replacement feet are included Parts Included - The Adult Pro-Jump M-Series Moulded to Bolt-On Feet Conversion Kit consists of: 2 x Adult Pro-Jump M-Series Aluminium Bolt On Feet WITH PAD 2 x Adult Pro-Jump M-Series Lower Spring Bracket 2 x Adult Pro-Jump M-Series Lower Spring Bracket Metal tube 2 x Pro-Jump Bolt On Rubber Sole (Four Hole) 4 x Adult Pro-Jump M-Series Black Plastic Bushing 8 x Adult Pro-Jump M-Series Bolt On Feet Screw