A set comprising both front and rear axle bobbins, 4 x machined race spec Nylon bobbins, 4 x nylon nuts and washers & 8mm studding in two lengths ( requires cutting to actual length required). Perfect for track days and race events, peg sliders also available separately . Studding supplied is the better quality stainless steel. Please note you must having hollow axles to enable the fitment of the 8mm studding.