[material]: for truly 304 stainless steel， reasonable design;workmanship; strict processing each parts. Top rounded，not to hurt the urethra， but should reasonable use， the folding is sheathed with a medical rubber protection

[size] outside the arc length of 13cm straight length of 9.5cm， diameter of about 3cm weight 0.25kg

Card ring size 4.3cm (can be customized 3.7cm， 4.7cm)

Tube (diameter 6 mm， straight length of about 65 mm， the middle is a hollow tube)

The difference between our products and other inferior goods (in saline)

The shop also offers trumpet with catheter CB3000， for details please click on the picture below：

How to measure the size of the snap ring

1 use tape or ruler measuring penile root， data can beread. -

2 go to the hardware store to buy a 50MM diameter steelpipe hoop， set in the heel of the penis， using cross screwdriver fastening， to adapt himself to the size， can take several hours to adapt， adapt and determine if the steel wire hoop should be customized and you tuned in diameter， will make a mark in the screw there， take it is screwed to the mark with ruler volume clamp diametercan be.