Box Of 8 Sliding Robots - Furniture Sliders /Movers/Pads - Asst Sizes This Listing Is For (1 Box Of 8) - 4 large sliders and 4 smaller sliders. Large Sliders - 6 3/4" Diameter Smaller Sliders - 3 1/4" Diameter Moving Almost Any Household Item Made Easy ! Made Of Highly Polished Polymer Resin.