Roswell's new Mag Swivel is the world's first magnetic board rack swivel and is a true upgrade for all board racks. The Mag Swivel's magnetic technology eliminates the need for springs which often wear out and offers smooth and easy operation. Two locking positions and brushed anodized finish keep the swivel durable for long-lasting use. Designed to work with any Roswell square swivel mount, including Aviator, AVX, FCT-3, 200, G21, F23, 210, 230, and S-Bend Towers. Note: This product is not intended for use with a universal clamp.