Dual Blades

Hi, this is my first ever mod for minecraft what adds new weapon called "Dual Blades"
This weapon has really fast attack speed and can't knockback mobs
But that's why this weapon has block, with it you can block any damage
Each dual blade has own defense precentage but each time you block damage it will use durability of your dual blade but it does not have cooldown for blocking and with block you can knockback mobs