Guyon Urethral Sound

9 Charr. (Ø 3.0mm), 10 Charr. (Ø 3.3mm), 11 Charr. (Ø 3.7mm), 12 Charr. (Ø 4.0mm), 13 Charr. (Ø 4.3mm), 14 Charr. (Ø 4.7mm), 15 Charr. (Ø 5.0mm), 16 Charr. (Ø 5.3mm), 17 Charr. (Ø 5.7mm), 18 Charr. (Ø 6.0mm), 19 Charr. (Ø 6.3mm), 20 Charr. (Ø 6.7mm), 21 Charr. (Ø 7.0mm), 22 Charr. (Ø 7.3mm), 23 Charr. (Ø 7.7mm), 23 Charr. (Ø 8.0mm), 24 Charr. (Ø 8.3mm), 25 Charr. (Ø 8.7mm), 26 Charr. (Ø 9.0mm), 27 Charr. (Ø 9.3mm), 28 Charr. (Ø 9.7mm), 30 Charr. (Ø 10.0mm)