【Universal】This Adjustable Leveling Feet uses the most common 5/16" thread in the U S,it can be screwed into all 5/16" threaded inserts. You can see them on various furniture brands like Costco, Stickley, Thomasville, Bernhardt, etc.(The thread material is stainless steel and the base material is nylon) 【Note】This product is recommended for indoor or outdoor furniture with the leg diameter greater than 1.2", such as coffee table,bar stool,,wine rack,bookshelf,balcony chair,patio table.If less than this size, there is a risk of cracking during installation. 【Function】Avoid direct contact between the furniture legs and the ground, protect the floor, tile or carpet from damage. The height of the four furniture legs can also be adjusted according to needs, the adjustment range is between 0.4"to 1". 【Install】 You need to use an electric drill to drill a hole with a diameter of 11mm and a depth of more than 25mm on the leg of the furniture, then implant the insert nut, and then install the adjustment feet. 【Service】Our company has provided services for various furniture brands for a long time, the product quality is credible. If you have any questions, please send an email, we will reply and deal with it within 24 hours. 5/16 Adjustable Table/Chair/Furniture Leveling Feet Screw on