NATHE Full Cheek Gag Bit - Flexible Mullen Mouth and HS Gag StrapsImpact on mouth, poll, and corners of the mouth With gag effect, puts pressure on the corner of the mouth Cheeks provide lateral contact for horses that tend to fall out while turning Can be used with one or two pairs of reins Suitable for technically demanding riding, as well as horses that tend to pull or lean on the bit Recommended for use by experienced riders only Bit guards to protect the lips Steel Core Available in 4 3 4", 5 1 8", and 5 1 2"