Made in USA Prescott Plastics 1.75" Inch Round Vinyl Plug Insert (50 Pack), Black Rubber Flexible End Cap for Metal Tubing, Fence, Glide Insert for Pipe Post and Furniture
Amazon.com: Prescott Plastics 1 1/4” (31.75 mm) Square Plastic Hole Plugs, Inserts, Black End Caps for Metal Tubes, Hardware Plugs, Fences, Glide Protection from Chair Legs, Furniture (20 Pack) : Industrial & Scientific
Threaded Inserts for Square Tubing - Metal Threaded Star Type Insert 3/4" (O.D.) Square Tubing Insert 1/4-20 Threads - Square Threaded Tube Inserts (4): Amazon.com: Industrial & Scientific
E-Z LOK - EZ-C816 Threaded Inserts For Metal; Assortment Kit; Carbon Steel; Heavy Wall; UNC Internal Threads, 1/2-13, 5/8-11, 3/4-10, 1-8; 22 pieces: Amazon.com: Industrial & Scientific
Milling Inserts Indexable End Mills Metal Ceramic Milling Inserts APMT1135 for Milling High Gloss Metal Parts: Amazon.com: Industrial & Scientific
Threaded Inserts for 1 inch (OD) Round Tubing 1/4-20 Thread 8 Pack Metal Tubing Threaded Star Threaded Round Adapter Thread Inserts for Metal Super-Deals-Shop: Amazon.com: Industrial & Scientific
Threaded Inserts for Square Tubing - Metal Threaded Star Type Insert 1-1/2" (O.D.) Square Tubing Insert 1/4-20 Threads - Square Threaded Tube Inserts (4): Amazon.com: Industrial & Scientific
Amazon.com: Prescott Plastics 1" Inch Round Plastic Plug Insert (50 Pack), Black End Cap for Metal Tubing, Fence, Glide Insert for Pipe Post, Chairs and Furniture : Tools & Home Improvement
Oajen metal threaded star type insert adapter for 7/8" OD round tubing, 5/16" - 18 thread, pack of 20: Office Products: Amazon.com: Industrial & Scientific