Stainless steel end stops are used to close the open slots at the end of curtain tracks. Easy to install with phillips screw driver. Compatible with RECMAR 32124, 42124, 52124, 3118, and 3120 tracks, as well as 84003 and 84004 ball bearing carrier curtain track. Black or Silver. 10/bag.Installation Tip - You can use two end stops to hold a curtain carrier stationary by pinning the carrier between the end stops. This can be helpful to keep a curtain closed at one end.