supply of supply of heavy duty industrial chain pulley block coveredsupply of heavy duty industrial chain pulley block covered,supply of heavy duty industrial chain pulley block covered with anti-corrosive thick steel cov er for gears and hand chain wheels, of capacity - 4 ton, standard lift - 6 meter, duty cycle - m2 class, calibr ated load lifting chains of diameter - 10 mm, no. of falls - 02 no., hand effort (kg) +/- 10%, proof load: 15 0% of rated capacity with isi mark and as per i.s. : 3832 latest specification. make/model:- bemco/cranova tor industries or similar. [ warranty period: 30 months after the date of delivery ] ] => limited