I bought this set because I so wanted to make a heavy oak cabinet movable. The lever I had first replaced by a wooden beam as the angled steel plate bent so that the cabinet slipped. The small rolls of coasters stuck between tiles even in small joints. The four coasters the ground must have no imperfections because then one will not be charged and shifts. Conclusion: the lever is too weak and the product is useless, at least for my purpose. Consequence: I have today ordered two robust furniture scooter with much larger wheels.