I've been using the stainless steel full cheek with copper rollers in the link below, and I was wondering if anyone could help me further understand the purpose of it. I know the copper encourages salivation and for the horse to accept the bit, but I was wondering about the structure and how that affects my horse and the severity of it. Thank you!!
Metalab Pessoa Stainless Steel Full Cheek Bit with Copper Rollers Mouth