[Specifications] - Folded Size: 340 x 25 x 9mm /13.4" x 1" x 0.35" (L*W*H); Unfold Length: 56cm/ 22"; Load Rating: 25kg / 55 lbs; Material: Cold Rolled Steel; Color: Silver Tone; Sections: 2.[Applications] - Widely used for kitchen cabinet baskets, furniture drawers, computer desk keyboard trays, tool boxes, folding furniture, etc.[Installation] - One for left side and one for right side. Pay attention to the key installation dimensions of the slide rail: Thickness, Folded Length, and Stretched length. Please keep the left and the right slide at the same height.[Note] - Please choose the correct style of the slide rail according to the bearing capacity you need. Please do not overload.[Features] - The slide rail is made of steel. The ball bearing is flexible, the noise is small when closing and opening. It is stable and durable.