the 15/5 and 15/4 wood zinger pro weigh app. 1 oz.. If your looking for light weight and efficiency these are the best wood props in this size. I have done some sharpening and thinning of these wood zingers and have been able to improve them quite a bit. they still will not produce the total all out thrust that the apc 15/4w does. The zingers will now out perform the apc in every other respect except full throttle total torque.