Max. Door Weight: 25 kg Door Thickness: 12-18 mm features: Koblenz system 2 Bottom rolling fitting set for one door only Application: Straight sliding bottom rolling inset cupboard doors, for domestic or light duty commercial furniture, face fixed to rear of door Set comprises: H - 2 No Top guides. Clip on, screw fixing, black plastic I - 2 No Bottom rollers. Adjustable, screw fixing black plastic J - 1 No Bottom track buffer. Adjustable, screw fixing, black plastic Top and bottom track 18181 are not included in the fitting set