-Material- 304 stainless steel is a high-strength structure, sturdy rigging hardware that is sturdy, rust-resistant, abrasion-resistant and corrosion-resistant -3T STAINLESS STEEL- M50 Bearing Single pulley It is equipped with a smooth rotating wheel, and can be conveniently used as a rope cable wire -Size and power- Size: 2inch (50mm) breaking load is 14,000lb (6ton) Working load: recommended to use 1/4 or 1/3 of the breaking load -Indoor and outdoor use- Can work indoor and outdoor ropes or cords for flexible sliding pulleys. Easy to install in large kayaks, canoes, transport, mining, homes. Suitable for garages, machine loading, curtains, clothes lines, dog pulley systems -made in korea by SSACK , our SSACK stainless pulley block is backed by our manufacturer 30days money back guarantee with 1year free replacement warranty.SSACK snatch block will always supply the best products at reasonable prices