Sounding deeply without lubricant

• 00:06
• 00:27
• 00:47
• 01:08
• 01:28
• 01:49
• 02:09
• 02:30
• 02:50
• 03:10
• 03:31
• 03:51
• 04:12
• 04:32
• 04:53
• 05:13

Sounding a silicone rod deeply without any other lubricant.