No nutcracker effect. No pressure on the palate. Matches perfectly with the shape of the 2490. Applies pressure to the tongue and top of the bars. Light contact provides immediate but mild action. Progressive action increases pressure on the outside of the bars. ** 4 1/2", 5" available upon request ** Association Approvals: Eventing: FEI, USEF, USEA Jumping: FEI, USEF, USEA These approvals are the best information we have at this time, but correctness standards are ever evolving. Competitors are reminded that they are responsible for the correctness of their tack. If a rider is unsure of the correctness of any tack, it is the rider’s responsibility to confirm their equipment with the steward or technical delegate.