The plate is marked where the parasol tube was screwed into the plate to test. This is normal for use but noting as it isnt in pristine condition. SLIIMU heavy-duty in-ground umbrella base with stand tube. Suitable for cantilever, offset, hanging, market and patio parasols. Steel construction, approx. 16.5–18lbs. Total height approx. 15in, mounting plate 6.3 x 6.3in, tube length 12in, tube diameter 2.3in. Designed to be buried in concrete or soil, leaving only the mounting plate visible. Please check dimensions and mounting holes before purchase.