We can offer to you the following flaps,pls check Such.as: 26.5-25 23.5-25 20.5-25 17.5-25 1400-24 1600-24 1300-24 1200-24 1100-20 1200-20 900-20 1000-20 900-16 700-16 750-16 825-16 700-15 750-15 Pls check the technical data: 1.tensile strength:5MPA,7MPA 2.Packing:weaving bag and carton 3.Material:natural rubber We can also add an iron piece.