It is made out of 316L Surgical Steel The 2 Piece Crown Glans Ring is 8mm in height and 8.5mm in thickness all around. It comes in six different sizes
Large Crown Penis Head Ring - 316L Surgical Steel Male
Solid Stainless Steel Donut Cock GLANS HEAD / SHAFT Rings - 21
Penis Glans Ring - UK
GLANS RING 26mm 28mm 30mm Slim Meaty Stainless Steel Sleeve Metal
Crown Glans Ring – Metal Penis Rings, Glans Head, Cock Rings, Ball
Large Crown Penis Head Ring - 316L Surgical Steel Male
GLANS RING 26mm 28mm 30mm Slim Meaty Stainless Steel Sleeve Metal
Metal Penis Ring Stainless Steel Luminous Lock Ring
Stainless Steel Cock