This set includes 6 umbrella replacement parts: two M8 40mm threaded knobs and four HDPE plastic hole rings in 1.95-inch and 1.55-inch sizes. The weather-resistant components provide secure pole stabilization while reducing wind-induced shaking and surface damage. Compatible with most outdoor umbrellas, these durable inserts enable quick installation at beaches, poolsides, and patios through adjustable tightening mechanisms. Rich in Quantity: you will receive 6 pieces of patio umbrella handle replacement parts including 2 pieces M8 40 mm threaded plastic knobs, 2 pieces patio table umbrella hole rings of 1.95 inches and 2 pieces patio table umbrella hole rings of 1.55 inches, enough quantity and good combinations to meet your umbrella parts replacement needs; Please note that when you receive this set, the smaller size umbrella hole base is placed inside the larger size umbrella hole base for ease of shipping Reliable Material: the umbrella stand replacement part is mainly made of HDPE plastic, reliable and reusable, sturdy and safe, with high temperature and weather resistance characteristics, threaded knob is made of quality black plastic and stainless steel, not easy to break or rust, which can serve you for a long time umbrella stand inserts: you will receive 2 sizes of pool umbrella sleeve caps including 1.95 inches and 1.55 inches, to meet most of the umbrella pole diameter needs, matching the size will be excellent tightening umbrella pole; Effectively reduce the wind caused by the umbrella shaking; Also can protect your umbrella to avoid friction on the umbrella pole scratches and dents Easy to Use: you can choose 2 sizes of umbrella hole covers according to your different diameter umbrella pole, put them together tightly to keep the umbrella stable; Then tighten the M8 40 mm thread after installation, and adjust the knob to avoid the umbrella from slipping Widely Applicable: these umbrella stand parts are practical and classic tools, which can be installed in most umbrellas for more options in outdoor spaces, such as beaches, backyards, balconies, poolside and more, bringing much convenience for you