50mm x M8 x Square Metal Threaded Standard Inserts - Grey HDPE
Square Nylon Screw Insert.
Furniture Accessories PVC Rubber Plastic Pipe End Cap Plug Caster Wheel Threaded Inserts Screw Nut Square Pipe Plugs for Steel Pipe End - China Plastic Threaded Inserts, Plastic End Cap | Made-in-China.com
Flyshop White M6 Threaded Plastic Plugs Square Tube End Caps Tubing Plugs Inserts Furniture Glider 19 mm x 19 mm 4 Pcs
Standard Threaded Plastic Square Tube Inserts | JET PRESS
Standard Threaded Plastic Square Tube Inserts | JET PRESS
Furniture Accessories PVC Rubber Plastic Pipe End Cap Plug Caster Wheel Threaded Inserts Screw Nut Square Pipe Plugs for Steel Pipe End - China Plastic Threaded Inserts, Plastic End Cap | Made-in-China.com
Featured Wholesale plastic plug with nut For Any Piping Needs - Alibaba.com
Square M6/8/10 Threaded End Cap Tube Plug Inserts Adjustable Table Feet Screw
Nylon Screw Insert
Amazon.com: Prescott Plastics 0.5" Inch Square Plastic Plug Insert (10 Pack), Black End Cap for Metal Tubing, Fence, Glide Insert for Pipe Post, Chairs and Furniture : Industrial & Scientific
Inserts for Square Tubes with M10 Metal Thread. Made in Germany (Black, 25x25mm, Pack of 36).See 2nd Image for Dimensions