𝟓. 𝐖𝐫𝐚𝐩𝐩𝐞𝐝 𝐓𝐰𝐢𝐬𝐭 𝐋𝐢𝐧𝐤 𝐂𝐡𝐚𝐢𝐧: This curb is the same as curb #4, the twist link chain, but holds its form rather than being flexible. When the curb holds its form, it will release off the jaw quicker, which gives the horse a more black and white signal.