Features:Abundant quantity: you will receive 12pcs Patio Umbrella Holder spare parts, including 2pcs 1.26" Patio Table Grommet Umbrella, 2pcs 1.5" Patio Table Grommet Umbrella, 2pcs 1.89" Patio Table Grommet Umbrella, 4pcs Patio Table Grommets. M8 20 good combination of millimeter threaded plastic knobs and enough and 2 pcs. Beveled grommets for umbrella parts. Reliable material: umbrella stand spare parts are mainly made of HDPE plastic, reliable and reusable, strong and safe, with high temperature and weather resistance, threaded knobs are made of high-quality black plastic and stainless steel, not easy to break or rust, can be long-term at your disposal. Size Information: You will get pool umbrella accessories in 3 sizes 1.26", 1.5" and 1.89" to meet most of your pole diameter needs, the matching size will be excellent for tightening the umbrella pole; effectively reduce the vibration of the umbrella and bring the wind; Ease of use: You can choose 3 sizes of escutcheons according to different diameter umbrella poles, put them tightly together to keep the umbrella stable; The diagonal piercing piercing can be placed in the umbrella pole to make the structure of the umbrella pole more stable, and then tighten the M8 20mm thread after installation, and adjust the knob to prevent the piercing