LEQMG Marine Nylon Block Universal Single Head Pulley,Smooth Silent Nylon Pulley,Boat Accessories(2Pack)

These definitely aren't the high-end blocks, but they also aren't anywhere near the price. They're a lot smaller than expected, but again.. Price, vs what you need them for? Definitely a good buy.

This is a set of two single rope pulleys. The pulley body is marine grade stainless steel and the grooved rope roller is black nylon. The roller has high quality bearings that will hold up to weather and high load use. The stainless steel single loop mounting eye also swivels. I look forward to a long life of using this on my boat.Would recommend this to anyone.

The steel portion of these are pretty thin so it doesn't seem to be too heavy duty. For light duty needs maybe and stainless steel is a good thing. The wheels are plastic/nylon so again it may not be for every need as they seem to be lightweight. The buckle appears to be pretty good though and should secure to whatever you need.

You get what you pay for on these.

These are budget-friendly, making it an affordable option. However, one drawback is that the fully threaded bolt tends to wear over time, which can impact its durability and longevity. While the pulley performs adequately, improvements to the threaded bolt design would enhance its overall quality and reliability.