Boost the versatility– and fun – of your Quadrilla sets with this four-block pack. Includes an adjustable distributor block where you choose the marble direction and three cool types of see-saw. Add the blocks to any Quadrilla set to increase play options and the element of surprise. Use the knob and button on the distributor block to change the vertical and horizontal direction of marbles. When marbles hit the red see-saw they are randomly distributed. The green see-saw collects 3-4 marbles before tipping to one side, while marbles in the blue see-saw can be distributed horizontally or vertically.