Durable quality: EZends Square plastic hole plugs are designed for high impact abuse and long lasting endurance. Made from heavy duty, high quality Black (LDPE) polyethylene plastics. Made in the USA. Measurements: The most important measurement is the square tubing's inside distance. The inside distance must measure between (.58 inch - .68 inch) or for metric (14.83 - 17.27 mm). Provides a flush sleek look when installed with square tube outside diameter (3/4 inch x 3/4 inch) or for metric (19 mm x 19 mm). Fits 14 gauge up to 20 gauge tube wall thickness. Multiple applications: Used for commercial and small house hold projects such as end caps for square tubing, chair leg floor protectors, plastic plugs for metal stools, metal fence post caps, square pipe or square metal tubing, chair sliders, fence rail end caps, chair leg inserts for metal legs, finishing end cap plug for fabrication projects. Floor Protection: When used as square plastic chair glides, these square end caps installed on furniture legs can prevent scuffs, scratches and markings on wood, tile, pavers and natural flooring. Perfect for basic house, patio, and office furniture. Easy Install: Easily inserts into your square tube end with a simple push of the thumb or a gently tap with a rubber mallet or hammer. Stop annoying floor noise: Allows furniture leg tips to glide quietly over flooring surfaces. Weather-proof: Designed with flexible fins for a snug tight weather-proof seal. Will not chip, peel, rust or corrode. Prevents rust stains: Prevents wet metal furniture legs from contacting wood and natural flooring. Package quantity: 50 Description3/4 inch 14-20 gauge square tubing plastic end cap plug Fits square tube outside dimensions (3/4"inch) or for metric (19mm) Fits square tube inside dimensions - (from .58 inch up to .68 inch) or for metric (from 14.83 mm up to 17.27 mm) Has proof of size (3/4 SQ 14/20) embedded on the side of capAvailable package Quantities 10,20,50,100Designed with flexible ridges for easy install and multi fit rangePlastic plug 3/4 inch has many general uses: chair glide floor protector, fence post end cap or plug, fitness equipment, tubing and pipe end caps for finished clean lookWorks with 14-20 gauge tubing or pipeMaterial heavy duty black LD polyethylene UV weather resistantHardness durometer 50dMax temperature 150 degrees Fahrenheit