The screw thread is NOT-universal, please measure before ordering, just prop up one corner of bed, twist off an original leg, measure the diameter by phone charging cable as shown in the picture Compatible with Metric M8 & M10, Standard 3/8 & 5/16, NOT fit others threads,especially NOT fit M-12, screw length 0.78 inch. 4 inches thicken tube metal bed legs with fixed height Compatiable with King Queen Full Twin XL size adjustable bed base Replacement legs for adjustable bed frame, also for furniture legs replacement

Specifications:

Application scenario: Great for Sofa, Couch, Chair, Ottoman, Furniture, Cabinet, Shelves. Easy to install

Height: Adjusts from 3.7” to 12″

Material: The center is supported by thick stainless steel,Extra Durable,and the outside is wrapped in plastic,Electrophoresis black to prevent rust and corrosion

Packing included: 4 pcs x Adjustable Height Furniture Leg;

Features:

1.This product is designed to match different beds' heights to protect your bed and mattress from damage or sagging.

2.The design is a cost effective way for maintaining the life of your expensive bedbase / Wooden Slat / Mattress Foundation / Platform Bed Frame / Box Spring .The bed frame support legs will hold and evenly distribute the weight of your heavy mattress efficiently protecting your bed and mattress from sagging and damage .Saving you money on bed repairs and mattress replacements.