Check the listing for details. SPRO Heavy Swivels Black 5 pack - Heavy Duty Swivels Saltwater & Freshwater. Color: Black, Condition: New. Listed at 11.88 USD. SPRO Heavy Swivels Black 5 packSPRO Heavy Swivels are high-quality, anti-corrosive, heavy-duty swivels designed for anglers who battle the big ones.Swivels are extremely useful for preventing your line from getting tangled upon retrieval.Great for any situation that requires high pound strength.Made of brass, product of Japan.Come in packs of 5, sizes 3 to 8, with pound tests ranging from 150 lbs to 1030 lbs. SPRO Heavy Swivels are high-quality, anti-corrosive, heavy-duty swivels designed for anglers who battle the big ones. Swivels are extremely useful for preventing your line from getting tangled upon retrieval, but the resourceful angler will employ them in a number of different contexts, like when chunking for large saltwater gamefish or trolling a splasher. These SPRO Heavy Swivels come in packs of 5, sizes 3 to 8, with pound tests ranging from 150 lbs to a whopping 1030 lbs. They're generally used when fishing for large saltwater gamefish, although they can be used in any situation that requires high pound strength. Grab a pack today and never loose another lure or fish to shoddy terminal tackle! Swivel SizePound Test (pounds)Overall Length (inches)Swivel Body Diameter (inches)Outside Eye Diameter (inches)Inside Eye Diameter (inches)031500.5440.1190.1180.066042400.6850.1610.1560.077053800.8130.1990.1970.107065600.8860.2380.2350.1430810301.1180.3170.3130.188