Measurements: Small plug is 2.25 inches in overall length, 1.75 inches insertable, 1.25 inches at widest diameter. Medium plug is 2.75 inches in overall length, 2.25 inches insertable, 1.75 inches at widest diameter. Large plug is 3 inches in overall length, 2.5 inches insertable, 1.8 inches at widest diameter.
Material: Borosilicate glass.
Color: Clear.