1、Stainless steel material is anti rust, possess high temperature resistance and corrosion resistance 2、The product is durable, sturdy and reliable, which helps a lot for your lifting work 3、The upper ring of the pulley can be rotated 360 degrees, which is convenient for you to use 4、Suitable for suspend heavy objects to reduce the load, used as a wire rope traction fixed pulley, lifting pulley, etc. 5、Single pulley block possess stable structure, excellent performance and long service life 2 x Single Pulley Block Item Type: Single Pulley BlockMaterial: Stainless steelUses: Used as a fixed pulley for wire rope traction and a lifting pulley Specification Inner height B （approx.） Inner width C (approx.) Wire diameter D(approx.)  Wall thickness E(approx.)   Width F(approx.) Wheel diameter H(approx.) Shaft diameter K(approx.) Slot width S (approx.) Total height L(approx.) Width W(approx.)   Safe bearing（kg）   M50 31.9mm / 1.3in 19.3mm / 0.8in 7.3mm / 0.3in 2.84mm / 0.1in 25.4mm / 1in 50mm / 2in 10mm / 0.4in 13mm / 0.5in 131.5mm / 5.2in 54.1mm / 2.1in 400