The perfect wrist adornments are available in five diameters specially shaped to fit perfectly around the wrist making them exceptionally comfortable. Designed for discerning individuals who want subdued quiet elegance, yet with a simple statement of the pervasive love of a submissive for his/her dominant mate. Approximate Dimensions [Metric/US]: Internal Diameters Available: See Below : 50, 55, 60, 65, OR 70mm Internal Diameters: 2", 2-13/16", 2-3/8", 2-9/16" OR 2-3/4" Shaft Width: 10mm [ 3/8" Inches] Balls: 2X 20mm [ 2X 13/16" Inches]