Nylon Datadart Nylon stems are available in Medium, Tweenie, short and Extra Short in 7 popular colours To purchase these stem's please see here for our authorised stockists Nylon Tweenie RedNylon Tweenie BlackNylon Tweenie BlueNylon Tweenie WhiteNylon Tweenie NaturalNylon Tweenie GreenNylon Tweenie Yellow White Natural Black Blue Red Green Yellow Available Sizes: Extra Short, Short, Tweenie, Medium