Myler HBT Shank Correctional Wide Port Bit Stainless Steel 5" HBT Shank, MB 41PBW Correctional Wide Port, Level 2-3 The MB 41PBW is a truly unique Myler mouthpiece. This mouthpiece is a correctional mouthpiece, a ported mouthpiece that collapses on to the outer lip and bars, and rotates on to the tongue. The port has a tiered design; the base is generously wide with rounded corners, offering virtually the same comfort and tongue relief of a Level 3 mouthpiece, while the top is narrower and has pronounced corners. If the horse is relaxed, the tongue can pass comfortably under the wide opening. When the reins are engaged, the mouthpiece collapses on to the bars and lips and rotates on to the tongue. The pronounced corners of the port apply two points of pressure on the tongue for increased control. The result is a mouthpiece that offers maximum tongue relief for the horse, but very good control for the rider. The unique design and the generous tongue relief of the MB 41PBW make it the only correctional that can be used long term, possibly even as a horse's finishing bit. Independent Side Movement Curved Mouthpiece Copper Inlay Notes: For the same tongue relief see the MB 05, for a non-correctional mouthpiece with the same tongue relief, see the MB 33. For slightly more tongue pressure, see the MB 43LP. For quicker tongue pressure and less tongue relief, see the correctional MB 27PB. The 5" HBT shank is stainless steel and slightly curved back, with a flat-top purchase and a rein ring. The mouthpiece has a fixed attachment. The HBT shank has the patented Independent Swivel Cheek, where the purchase, mouthpiece and shank all move independently of each other. The purchase is slightly angled away from the cheek to avoid rubbing. It has an indirect (curb) rein action designed to be used with a curb strap which attaches to the purchase. The HBT shank uses the combination of the fixed cheek and fixed rein to apply pressure to the mouth, chin and poll. Action: Indirect Disci