Blown by Spartacus line of high quality artist made borosilicate glass tolerant of extreme hot, cold and pressure. Safe, hygienic and compatible with all types of lubricants. Dishwasher safe, hygienic and non-porous. This small tapered plug measures: Length 4.25 inches: Widest part of plug 1.25 inches .Girth 4.5 inches. Color Black.