This collar is made from 3mm thick, 30mm wide heavy rubber, with spikes that can be either 25, 32, or 45mm long.

The buckle used is made from stainless steel. (304 & 316)

The rivets we use are made with a nickel free plating.

The spikes on our collars are held on by smooth head screws for comfort against skin. They are made from stainless steel in Australia.

The photos show the 45mm version of the collar.