Sprenger 3 Ring Bit Vienna 18 mm Single Jointed Stainless Steel Horse Bit Size:125mm non slip fit waterproof and breathable GORE non slip fit Iron on reverse with low heat if needed 3 Ring bit "Vienna" 18 mm single jointed Stainless steel mouth piecehelps to create more control over strong horses that evade a contactextremely versatile offers 4 different rein optionsdepending on where the reins are attached varying degrees of lever action intensify the rider_x0018_ s aidsusing a curb strap can limit the poll pressure and additionally acts onto the lower jawideal to master technically difficult passages in showjumping courses