Rugged construction and shock-resistant design make it extremely rugged. 360° FREE ROTATION - The rotating head of small pulley are solid cylindrical head, which can be rotated 360°, prevent the rope/wire knotting and easy to use. Flexible pulley with heavy-duty capacity for indoor and outdoor applications. SMALL VOLUME with HEAVY LOAD - 4Pcs x M20 Single Pulley Block, Size: 74mm/2.91 in (length), Max Load It equips with heavy duty capacity with very practical design and super solid structure. Product Description Description This item is manufactured with 304 stainless steel material for reliable and long-lasting use. Buy M20 Lifting Crane Swivel Hook Single Hanging Wire Towing Wheel 304 HEAVY LOAD4Pcs x M20 Pulley Block(2 Pcs Single Pulley & 2 Pcs Double Pulley), 574mm/2.91 in (length),Max Load: 75kg The precise design will ensure its practicability in the work of highly performance. TOP QUALITY - Made of high-quality stainless steel material, the whole pully has higher hardness, moisture resistance, corrosion resistance, rust resistance than ordinary materials. Flexible pulley with heavy-duty capacity for indoor and outdoor applications. Pulley Wheels Stainless Steel Pulley Block M20 Stainless Steel Double Pulley Block - Heavy Duty 304 Steel Roller With Bearing (75KG Capacity) 2-Pack Rope Pulley Swivel Hook Pulley SMALL VOLUME with HEAVY LOAD - 4Pcs x M20 Single Pulley Block, Size: 74mm/2., 91 in (length), Max Load: 75kg.