4Pcs Leveling Glide Adjustable Height Insert 50mm Square Tube Rack Feet 50mm

Adjustable plastic sleeve (plug), you can adjust the height, durable, strong wear resistance,
good toughness, not fragile, in combination with the nut sleeve wheel regulating chairs shelves
height for mat shelves, chairs, Ottomans, a fixed handle, hand wring regulator

Specifications:
Material: plastic +galvanized screws
:black
Size:50mm

Note:
Your tube outside diameter is 40mm that buys 40mm tube plug! Tube wall thickness 0.05---2.0mm
more appropriate, more than 2mm-4mm can be cut into the trim












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