The BlueRanger economy shoulder pulley is an affordable overdoor Shoulder Pulley BlueRanger features a unique cleat handle that makes it easy to adjust the line length. Other pulleys require the patient to un-tie and re-tie knots if you are changing exercises. The cleat lets you simply slide the rope to the desired length and notch it in place. RangeMaster pulleys feature an indestructible zinc-coated metal pulley housing. Lower quality pulleys have a plastic housing. We've tried them. They can melt in actual home use. Some pulleys use a tin housing. The tin is weak and can twist out of shape in actual home use. At RangeMaster, we initiated the use of bright blue rope, but don't be fooled. Other pulleys have mimicked our blue color, but they don't have the high quality zinc coated nylon roller pulley and they don't have the notched handle for simple line length adjustments. We've been making RangeMaster Shoulder Pulleys since 1990. We've served more than a million shoulder patients.