DIYHD 10FT bi-parting Knight wheel double sliding barn wood door track kit to hang two door panels hardware only,not including door panel Material:Steel;Color:Black;Suitable for door thickness:40-45mm;Two rollers can bear MAX weight 90kg Track had been pre-drilled 16" apart holes Package's including:Roller*4;Stopper*4;5FT track*2;Track connector*1;Track&wall connector*8;Anti-pad*2;Floor guide*2 The track connector is a little bit shorter than track which is allow roller slide from one end to the other end