Size :50mm (2 Inch) Colour: Black Quantity: 4 pieces Size:The 2" round plastic plugs only fit 50mm (2 inch) outside diamefer round tubing or pipe. (not inside hole diameters ,not inside hole diameters) Designed to fit inside hole diameters from 1.81" to 1.93".with a wall thickness 0.020" - 0.060".?Refer the Size Picture?Select the plug size that matches the outer diameter of the tube, note that the outer diameter of the tube must match. there are certain errors in the size of round pipes and pipe plugs, which is a normal phenomenon, please check the size before buying.?Refer the Size Picture?? Scope of application? These tube plugs are perfect for fitness equipment, trailer frame ends, slide chairs,fence posts, gate rail post covers, pole pipe rod caps, metal rackfittings, wrought iron steel finishing plugs, or any round opening. Instructions for use: Hold the round tubing caps. Align the installationMetal tubeand push Successful installation. 1. Please carefully confirm the size of the installation parts before purchasing. 2. Please carefully measure the inner diameter and outer diameter of the installation pipe. 3. Measure the size of the pipe before purchase to determine the matching to ensure that it meets the. Round plastic plugs only fit 50mm (2 inch) outside diamefer round tubing or pipe. (not inside hole diameters) Designed to fit inside hole diameters from 1.81" to 1.93".with a wall thickness 0.020" - 0.060".?Refer the Size Picture?Select the plug size that matches the outer diameter of the tube, note that the outer diameter of the tube must match. there are certain errors in the size of round pipes and pipe plugs, which is a normal phenomenon, please check the size before buying. Material: 50mm (2 Inch) round tube end cap plug Made of high-quality plastic, durable and wear-resistant. Waterproof and compressive wear proof. Uses:black plastic cap Provides long lasting protection? great for preventing scuffs on wood floor or as protection glides on chair tips, bench feet, table legs, bar stool foot sliderschair leg protectors, patio furniture inserts, and much more. The 2 Inch round threaded inner plug can be used as a durable solution for home or outdoor projects, including replacement of fence/door railing covers, trailer frame ends, rod tube rod caps, wrought iron steel decorative plugs or any round opening. Not easy to deform, firmer, not easy to fall off, easy to install. We believe that our round Tubing Post End Cap, will exceed your expectations. If you have questions, please contact us any. We will try our best to solve your problems.