For a very special sounding experience get this fantastic penis plug and ring combo.

The grooves along the shaft of the penis plug provide highly orgasmic urethral stimulation. 
The glans ring stops the penis plug from slipping out when worn and it also hugs your penis ensuring a really satisfying firm fit.

Total length: 2.75″ = 72mm

Cum through hole - NO

2 sizes of Glans Rings: 1.20" = 30mm, 1" = 25mm

Widest point Diameter: .31mm = 8mm