This insert is a must have if you really want to go deep.  Use an alligator clip test lead or one of our special Banana or TENS socketed adapter wires with an alligator clip to "energize" this baby for the ride of a lifetime.  :)

This slim plug is made from 316LVM surgical steel

NOTE: The new inserts we received are 10.75mm in diameter.  The picture below shows 8mm and is incorrect. 

Total length ~8 3/8" , Insertable length ~8 1/8"
diameter 3/8" (8mm) at insertion side, slimming down to 1/4" (6mm)
Comes with 3 /metal reprovision rings

Comes in a sealed plastic.

Tapered tip for easy insertion

Comes with 3 /metal reprovision rings :
 1" / 25mm
 1 3/16" (30mm)
 1 5/16" (34mm)

Hollow, allowing everything to flow right along.  Will come with special preserving powder inside - needs to be cleaned before use with any thick thread and alcohol