This COMPLETE SILKS HARDWARE SET will allow you to safely rig your aerial silks fabric, attach to your existing rig point, and spin while training/performing. Figure Eight (Descender) is made of High-Quality Aluminum, rated up to 32KN (7194LBF). Perfect to help distribute the pressure evenly on your silks and to provide a natural separation between the poles. Swivel - 360 Degree Rotation.Spin easily from your aerial silks or Lyra with this aluminum alloy swivel. Ideal for swing sets, aerial silks, hammocks, or anywhere you need smooth rotation.dimension: approx. 10.7 x 5.5cm / 4.21 x 2.17 inches Carabiner: O shape carabiner buckle with a screw gate closing is compact, strong, and useful for many purposes. Applicable for exploring, rappelling, rescue, engineering protection, aerial work.Size: (L x W): Approx. 6 x 11cm/ 2.4 x 4.4inch This swivel and Carabiners kit takes the pressure off the mount for a safer installation.swivel allows the aerial silks to spin safely with minimum strains on the hardware. This can also be used with either one-point or two can be purchased for a two-point yoga hammock. COMPLETE SILKS HARDWARE SET For Aerial Silks Acrobitic Dance,yoga hammock contains heavy-duty certified rigging hardware: 2 Screw-Lock Stainless Steel Carabiners (CE & EN Certified) rated up to 25KN (5620LBF) 1 Figure Eight (Descender): made of High-Quality Aluminum, rated up to 32KN (7194LBF) 1 Swivel (Gimbal) made of High-Quality Aluminum (EN Certified) rated up to 30KN (6744LBF) This will allow you to safely rig your fabric, attach to your existing rig point, and spin while training/performing. We recommend the complete setup for anyone that will ever rig in a space that is at least 12 ft high. There are exceptionally few aerialists who prefer training without a swivel, and we believe you will love the dynamic movement and appeal of having the ability to spin.