4 Pieces M8 Threaded Tube Inserts For 0.79 By 0.79 Inch Square Tubes Black Plastic End Caps Chair Leg Plugs For Furniture Feet Includes 4 Press Fit Inserts With Inner Height 14mm And Overall Height 18mm And M8x1.25 Thread

Top-notch M8 threaded inserts for 20mm square tubes, 4-pack
✔️ Fits 20x20mm (0.79x0.79-inch) tubes with M8*1.25 threading, made of durable black plastic for stable support and easy caster or pad fitting, includes 4 pieces.

These threaded tube inserts are handy additions for square tubing, often found in everyday furniture like chairs, tables, and shelves to boost mobility or keep things steady on the floor.

✅ Inner height 14mm (0.55 inches), overall height 18mm (0.71 inches), and overall size 20x20mm (0.79x0.79 inches)
✅ Material is tough black plastic with M8*1.25 threading for attaching casters or adjustable feet
✅ Design includes ribs for simple tap-in install, resists deformation, and helps with anti-skid and noise reduction
✅ Works well for office or home setups like desks, racks, or fitness gear for better balance and floor protection

💡 What are the benefits of using threaded inserts in tube assemblies?
Threaded inserts provide a reliable fix for connecting parts in various setups.
- They enable smooth addition of wheels or levelers for easy adjustments
- Offer strong support to prevent wobbles in daily use
- Reduce wear on floors by adding a buffer against scratches
- Make it simple to swap or upgrade components without major hassle