Myler Western Dee Comfort Snaffle with Copper Roller MB 03, 5" all in one groomer Stainless Steel Construction — Durable and Topaz brings a Stainless Steel Construction — Durable stainless steel body resists rust and corrosion for long lasting performance in arena and ranch environments most consistent contact to stay soft and responsive MB 03 Wide Barrel with Copper Roller — Active Tongue Engagement — Same comfort design as the MB 02 with an added copper roller that encourages active tongue movement and additional salivation for horses that benefit from more mouth engagement consistent starting point for horses beginning the Myler system or horses that benefit from additional copper engagement