SNYKTY David Non-Slip Metal Gasket for Bed, Prevent Mattress from Sliding Off Bed Frame, 6 Pieces, 0.47 inch Wide, Black。for Iron Bed Frame only. Thickened Steel. Twin.

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Easy to assemble: no tools and bolts are needed, just insert the outer tube of the iron bed frame.
SNYKTY’s snap-on non-slip washers and the width of the outer tube/rod of the bed frame ensure that they fit perfectly.
Prevent your mattress from slipping: There are 6 non-slip washers with snaps, enough to insert them into the side of the bed to keep the mattress stable.
Thick material: The non-slip buckle washer is made of thick metal, which is strong and durable, not easy to bend, and can prevent the mattress from sliding.
This requires light pressure on the buckle anti-slip gasket: the opening size is 12.4 mm (approximately 0.49 inches).
For this product, if you have any questions, you can contact us at any time. We will provide you with the most perfect solution. The warranty period is 5 years.