You are clear for takeofffire up your afterburner and get your spark on with the high flying jetts by razor just step up strap down and take off with these easily adjustable always awesome sparking heel wheels to transform your ordinary trainers into the hottest way to rollfeatureseasily removable and replaceable spark padsheavy duty polymer quick click frame with hook and loop strapproprietary 50 mm urethane wheels and sealed bearings wheelsspecificationsmax rider weight 80kgage 8assemb