DescriptionA pulley block is a kind of professional hoisting tool, is a necessary mechanism composed of a wheel on an axle or shaft. Using stainless steel and nylon materials, it is sturdy and durable for long servicing time, can be used for boat, rope, cord and so on, bring you convenience and satisfy your needs.Features-Color:Black -Material:Stainless Steel,Nylon -Size:9.80X5.20X2.00cm/3.85X2.04X0.79in - Adopting nylon and stainless steel materials, has high hardness, not easy to deform or break, for longer servicing time.- Pulley wheel at the tip of the rings and rotating screw has stable and strong connection, you can use rest assured.- Delicate technology, solid design, durable and wear-proof, strong load-bearing, swiveling flexibly.- Practical pulley can be widely used for wire rope traction, object handling, home or outdoor gym, etc.- Low friction, the tip of the ring can be rotated to the angle you want, meet your demands very well.