Not exactly sure what you mean, but hopefully this will help. I am using an Oscar Controls Model 3 Pro (like his current Vortex spinner). I assume you want to know the weight of the part of the spinner that actually spins (as opposed to including the brackets, fiber board, etc.. I also can't weigh the thing since it is installed... The knob weighs about as much as 10 quarters (meaning the coins), the flywheel (about 3 inches in diamter) weighs about as much as 10 quarters as well, plust the metal post holding the two must weigh about 3 quarters - so say as much as 23 quarters. When I spin it, it has some weight to it, feels sturdy.