1. This is Otis elevator door slider, we are manufacture and can provide many kinds of door sliders. 2. The base technical parameters : 50×12×10mm. 3. The two holes distance : 56mm. 4. The iron board technical parameters : 80×21×2mm. 5. Door slider material : Iron, Rubber 6. We can provide many kinds of door sliders.If youprovide drawings and technical parameters, we can open mold to produce specially. 7. More information pls feel free to contact me.