A quick release device includes an attaching member having a chamber for receiving various objects and having two end members, and having an aperture formed through the end members for receiving a tie rod, a longitudinal lever arm having a bore for reducing the weight of the lever arm, and having a cam member for engaging with one of the end members, and having a channel formed in the cam member for forming two limbs, and having an orifice formed in the limbs for receiving a shaft, and the free end portion of the tie rod is secured to the shaft for securing or releasing the end members, the lever arm includes an increasing strength and a decreased weight and a decreased manufacturing cost.