1、Stainless Steel Material: Made from premium stainless steel, the small pulley block offers durability, high strength, and stability, ensuring long lasting performance. 2、Effortless and Silent Operation: The fixed pulley wheel allows for effortless and super quiet movement, ensuring stable sliding and preventing rope twisting, ensuring optimal rope performance. 3、Maximum Load Capacity: With a maximum load capacity of 176 pounds, this single pulley block is suitable for ropes with a diameter of up to 6mm/0.2in, providing reliable support for various applications. 4、Easy Installation: The wall mounted pulley block comes with screws and expansion tubes, making installation quick and simple. The mounting hole diameter is 8mm/0.2in. 5、Versatile Applications: Widely used in industrial and household material handling, this small pulley block is also suitable for accessories for electric roller shutter doors and electric ceiling lights. 4 x Pulley8 x Expansion Screw8 x Expansion Tube Item Type: Small Pulley BlockMaterial: Stainless steelPulley Block Height: Approx. 34mm/ 1.3inPulley Block Width: Approx. 21mm/ 0.8inWheel Diameter: Approx. 25mm/ 1.0inWheel Width: Approx. 6mm/ 0.2inHole Location: Approx. 45mm/ 1.8in