General description This umbrella stand parts set includes 6 pieces designed to stabilize and align patio umbrella bases. It features 3 umbrella hole rings and 1 oblique mouth umbrella stand pipe, along with 2 M8 star hand tightening screws. Technical specifications Umbrella hole rings inner diameters: 1.9 inch, 1.5 inch, and 1.3 inch M8 star hand knob tightening screw length: 20 mm (0.79 inch) Premium Material Made of high-quality plastic for durability Good extrusion resistance, high temperature resistance, and weather resistance Replacement screws made of premium plastic and stainless steel for added strength Installation Use the umbrella rings according to the diameters of the umbrella poles Insert the umbrella pole into the base Tighten the M8 star hand knob to secure the umbrella and prevent slipping Usage Compatible with standard pole diameters on the market Ideal for use on patio tables, beaches, backyards, gardens, balconies, decks, etc. Classic black color complements all