Product Description: Bottom of leveler: 

23.5 mm x length:28 mm

Thickness of leveler : 7 mm / Screw length: 20 mm x Screw dia: 1/4"

Material Bottom of leveler: Plastic  / Screw: 

Steel Surface Treatment Bottom of leveler: Black  / 

Screw: Zinc

Plastic Leveler Glides  Function Explanations Mounting for table / chair / cabinet furniture's bottom of legs.