单滑车

带旋转接头滚珠轴承帆船

1,800 kg, 3,000 kg, 4,000 kg
(3,968.3 lb, 6,613.9 lb, 8,818.5 lb)

3,600 kg, 6,000 kg, 8,000 kg
(7,936.6 lb, 13,227.7 lb, 17,637 lb)