★ MEASURE YOUR TABLE & UMBRELLA POLE BEFORE ORDER. ★ This umbrella wedge might have a pre-cut seam at one side for better-fit the umbrella pole and it works fine inside the patio table hole. ★ Fits umbrella poles up to 1 1/2 inches (38mm) in diameter; table opening 1.8 to 2.4 inches or umbrella weight base hole diameter 2 to 2.5 inches (see images) ★Lubricating oil / soap-suds / vaseline / Sanding might be helpful in installation. ▼ No more swaying / wobbly umbrella. ★ Curved (see engineering drawing in second images) Tapered Design keeps the Umbrella properly seated and eliminates any rattles. ★ Installs in seconds and is easily removed for storage. We have two sizes for umbrella poles in diameter: 1 1/2' (38mm) or 1 3/8' (35mm). 100% Brand New & Extra weather-resistant material used for outdoors. ★ Installation: 1. Draw out the umbrella and pole from the hole on the patio table. 2....