there are lots of different solutions to stretching.. and lots of specialty products...
- Sax Leather

Ball Stretchers and Weights

For steel split collars... I highly recommend to look for ones with a gentle RADIUS on the inner edges...
these are very good, and come in a variety of inner diameters for the best fit.
https://www.secretleather.com/osc/es...t.php/cPath/11

also

FETTERED PLEASURES - 56MM HIGH BALL WEIGHT

Ball-stretchers & -crushers

Backlash Leather stretchers

Buy Steel Ball Stretcher for ball and testicle stretching at ChastityPlay with styles from 220gm up to 2 kilos, superior German design.

For leather... my favorites... and ones that can be stacked for extra length and weight, are the leather tubes filled with lead shot made by Stormy Leather. They are very comfortable and can be worn all day long... and all night without chafing.

www.TheRimbaStore.com


For LOW profile-- something less obvious when out and about... you can get leather parachutes or collars and hang additional weights that will hang on a chain down near your ankles.
Mr. S Leather -- Search results

130 gram Weight - Use for Stretching or with Adult Toys - Ball Weights - Body Jewelry

Black Steel Ball Weights

Cock Ring and Ball Weight Set - Extreme Restraints

Stainless Steel Ball Stretching Weights/Ball Stretcher