Complete kit for two-sash sliding windows, consist of: 2 alignment corner cleats. 4 adjustable doble wheel rollers with thrust bearings. 1 set of condensate collection caps. 4 cover hole caps. 2 antisliding blocks. 4 sash stop blocks. 2 central sealing brush holder blocks. 6 baseplates for adjustable compensating bars. 6 hole caps. 6 adjustable compensating bars. Length: 20 mm.