Style,Hole-Free Version Barn Door Hardware Stopper, One-Way Operation. With the latest design of the soft close, there is no need to drill holes on the track or decide where to install screws. Simply attach the soft close to the back of the track with the hook and fasten it with the supplied hex wrench. behind the rail, it slows bringing them to a soft stop in their final position.Quality,All products are tested and inspected strictly before being released on the market. Passed the opening and closing test for over 120,000 times.The provides a clean, soft close. Manufactured to precise dimensions, this mechanism hides subtly behind the track, gently and quietly catching your barn door similarly to soft-closing drawer slides. Designed for interior hardware applications, the is a great and safe way to reduce the impact of the door upon of the track. The triggers adjust vertically to accommodate low spots and make the door functions smoothly.The Soft Stop mechanism also adjusts for less or more tension as needed for desired operation.whole This product is designed for One-Way Operation. It comes in pairs, one for the left side and one for the right.You should install 2 at each side, then the door will stop softly when opening AND closing.all actuator whole setInstall the Soft Close MechanismConnect the two S-Shape hooks to both end sides of the soft close with the supplied screws.Simply attach the soft close to the back of the track with the hooks and fasten it with hex wrench.Install the ActuatorTo determine where to install the actuator on the door, firstly you may push the door to the final stop position.Then place the actuator into the gap of the soft close, and fix the actuator there with the supplied screws.Repeat the above steps on the other side whileinstalling the second soft close set.colour:blackMaterial: Plastic + Metalsize:Leng: About 31cmPackage Contents:2 x Soft Close Mechanism4 x S-Shape Hooks2 x L-Triggers/Actuators4 x Tapping ScrewsAttention: There is no need to drill small holes on the rail.Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.