Material: Stainless steel metal 

 

Color: Silver 

 

Trumpet: diameter of about 3 cm， diameter of about 2.5 cm above the groove sets in JJ glans 2.5cm 

 

Medium: diameter of about 3.5 cm， diameter of about 3 cm above the groove sets in JJ glans 3.0cm 

 

Purpose: male friends Gujing cynomorium increase erection hardness strength 

 

Note: The diameter of the ball size may vary by product batch sizes vary， pro received prevail in kind， mind do not shoot， thank you!

 

Use: Under the state of semi-hard penis， glans groove JJ brought in erection， if you want to remove this ring， just use a small amount of lubricant applied in the wear parts， you can easily win. 

 

Note: Do not bite off more than Tan Liang， erection time over 45 minutes， it is recommended to remove