Uberkinky Hegar 8 Inch Urethral Sounds

The Hegar Urethral Sound Kit comes with 8 hollow body friendly stainless steel sounds that gradually increase in width

The great thing about this set is that the sounds are slightly larger on one end than on the other. This means that you get a total of 16 graduated sizes in 8 sounds. Ideal for beginners and experienced urethral play enthusiasts.

French Gauge	Diameter (mm)	Diameter (inches)		French Gauge	Diameter (mm)	Diameter (inches)
3	1	0.039		16	5.3	0.210
4	1.35	0.053		17	5.7	0.223
5	1.67	0.066		18	6	0.236
6	2	0.079		19	6.3	0.249
7	2.3	0.092		20	6.7	0.263
8	2.7	0.105		22	7.3	0.288
9	3	0.118		24	8	0.315
10	3.3	0.131		26	8.7	0.341
11	3.7	0.144		28	9.3	0.367
12	4	0.158		30	10	0.393
13	4.3	0.170		32	10.7	0.419
14	4.7	0.184		34	11.3	0.445
15	5	0.197