Check the listing for details. 4 Pack M50 Lifting Single Pulley Roller Loading 880Ibs, 304 Stainless Steel Heav. Condition: New. Listed at 43.95 USD. TOP QUALITY: The whole is made of high-quality stainless steel material, which is higher in hardness than ordinary materials. The material has the characteristics of moisture resistance, acid and corrosion resistance, and rust resistance. Rugged construction and shock-resistant design make it extremely rugged.EASY TO USE: This 50mm Single Pulley Block is ergonomically designed. 360 degree rotation to prevent knotting of the rope and easy to use. The flexible pulley has heavy load capacity and is suitable for a variety of applications, with a load of 880lbs.SUITABLE FOR: This M50 silver crane swivel hook designed for indoor and outdoor rope or rope applications, the flexible pulley with heavy duty capacity is suitable for a wide range of applications.SURFACE TREATMENT: It is made of stainless steel, the surface is bright and shiny, it will not release toxic substances, it is environmentally friendly, non-toxic and harmless.EXQUISITE TREATMENT: Package includes 4 pack single pulley roller.It's super sturdy and wear-resistant, solid design, super load-bearing, flexible rotation. The production is very well-made, the pulley cylinder is strong and durable. Product Description DescriptionThis item is manufactured with 304 stainless steel material for durable and long-lasting use. It's rustproof and corrosion-resistant with smooth sliding function. It equips with heavy duty capacity with very practical design and super solid structure. The precise design will ensure its practicability in the work of highly performance. Specification Size: M50 Color: Silver Quantity: 4 pack Material: 304 Stainless Steel Safe Loading Capacity: 400kg/880 lbs Product Name: Single Pulley Block Package Includes 4 x Pulley block Pack 10 Pack 10 Pack 6 Pack 6 Pack 4 Pack Brand Rocaris Rocaris Rocaris Rocaris Rocaris Loading Capacity 35kg /77 lbs 75kg/165 lbs 150kg/330 lbs 250kg/551 lbs 400kg/880 lbs