Adjustable Height Center Support Leg: Adjustable height bed support legs, suitable for various bed frames, effectively prolonging the service life of the bed,strong bearing capacitycan bear 250kg. Function: Bed center frame slat can provide stable strong support for bed slats and bed frame to avoid damage or sagging of mattress or bed. Durable Material: Bed support legs is made of high quality thicked PP material, durable and strong load bearing, can be used for a long time. Easy to Install: Sofa furniture cabinet feet is easy to use, you just need totwist the base to adjust the thread tighten it. Wide Application: Adjustable furniture leg is suitable for bed frame, table, coffee table, sofa, home cabinet and other furniture. Specification: Material: PP Size Chart: Top Diameter:8.8cm/3.46inch Bottom Diameter:3.7cm/1.46inch Adjustable Height: 13cm: 13-22cm/5.12inch-8.66inch 15cm: 15cm-28cm/5.91inch-11.02inch 18cm: 18cm-34cm/7.09inch-13.39inch 20cm: 20cm-37cm/7.87inch-14.57inch Package Includes: 1Support Leg