Small Joh -- Medium silicone -- J-541 Aelit There is some inconsistency with

There is some inconsistency with the colors on these

The larger insert will transfer vibrations better while the smaller insert may dull the vibrations more

4 inchesCircumference of the knot: 7

This upgrade is not compatible with the following toys and cannot be added to them: Emme Eggs

We do not guarantee the orientation of the hearts and stars in your pour as silicone is a fickle substance

Small Joh -- Medium silicone -- J-541 Aelit There is some inconsistency with**Before buying, please familiarize yourself with our Store Policies and Shipping Policies. For information on silicone firmnesses, please visit the Our Silicone page.** Small Joh Firmness: Medium (0050) Color: shades of blue Approximate Measurements: Total length: 4 inches Useable length: 3. 5 inches Diameter of the head: 1. 25 inches Circumference of the head: 4. 25 inches Widest shaft diameter: 1. 5 inches Circumference of the shaft: 4. 75 inches