High-Quality Swim Gear: Practice explosive race starts with this platform that adds power and agility to a swimmer's dive and fits all standard blocks Customizable Pool Accessory: Choose between the semi-permanent bolt method or temporary strap method to attach this starting block to your existing block Adjustable Swim Training Equipment: With seven adjustable swimmer settings, you can set the wedge at your preferred distance or hang it off the back of the block for relay starts FINA-Compliant Swimming Accessory: The Swim Block Track-Start is FINA-compliant and made with a stainless steel platform and polyester tread; it's 50cm+ wide and 50-81cm long About FINIS: Our mission is to simplify swimming through innovation, high-quality products, and a commitment to education