This clear plug has an ultra smooth finish and is pretty straightforward. It is designed and constructed for the plug connoisseur. The 1" Diameter at the shaft plug features a 1 3/4" diameter maximum width (5/5" circumference)and an approximate 3 3/4" total length. Don Wands are made from Dorosilicate glass (more commonly known as Pyrex) which has been used in the medical and science fields for decades. Don Wands Glass Pleasure Wands stay cleaner than plastic or rubber toys. It is non porous which makes it easy to clean and keep germ free. Clean them with antibacterial soap and warm water or Isopropyl alcohol, then rinse with water. Clean before and after use. Your Don Wands Glass toy will last more than a lifetime when properly cared for. Sold as an adult novelty only.