Cords and Pins are used to create an "Expanding Connecting Strap". A Hopple Shortener Extension is buckled into the connecting strap buckle, with the pin fed through to hold it in place. This shortens the hopples for the beginning of the race to prevent the horse from breaking gait. The PVC covered cord goes back to the sulky with a hand loop for the driver. When the driver is satisfied that the horse is balanced in its gait, the cord is pulled to release the pins and the hopples are immediately lengthened, allowing the horse to lengthen its stride. Coloured Cord (the colour may vary) with Stainless Steel Pins Replacement Pins are also available for separate purchase Coloured cords are a safety requirement for harness racing in many countries. Please check with local authorities for rulings in your area.