Pulley ø 250 monodirectional for rope diameter 6-8 mm. Approved by TÜV Germany according to Directive 95/16/EC and EN81-1/2 standards and 2014/33/EU directive and EN81-20/50 standards. Nominal speed up to 1,24 m/sec. Tripping speed from 0,48 up to 1,43 m/s. Also available with protection carter.