Jake Adams Double Jointed Whistle Mouth Pelham 5.25inJake Adams Perforated mouthpiece design Effective for heavier horses Tongue pressure variation Mouthpiece thickness: 18mm 5. 25" PDJW135 The Double Jointed Whistle Mouth Pelham Bit combines the moisture promoting whistle mouthpiece with the flexibility of a double joint and the leverage of Pelham cheeks. The mouthpiece encourages salivation and acceptance, while the Pelham cheeks add curb action that can be adjusted through rein placement. This bit is