Strong, simple device that cinches securely to any line 1/2 inch to 1 inch (1.27 cm to 2.54 cm) in diameter. Just loop it twice around a line, snug it tight, and it will hold. Loosens easily for adjustment or removal. Ideal for taking tension off a jammed line, rescues, climbing a main halyard, looping around a handrail or steering wheel, and leading lines around difficult areas. Sold in pairs.