[Self-Drilling Anchors Screws]Knock, Insert, Tighten - Quick and Convenient Installation. [No Need to Drill]Easy Operation, No Damage to Wall - Wall Screws [Quick Breakthrough]Concentrated Focus, Strong and Reliable - Drive Screws into Drywall. [Wide Application]: These self-drilling anchors and screws are suitable for installing drywall in homes, offices or any other buildings; hanging various items on your home decoration, such as curtains, wall lamps, murals, partitions, pipelines, picture frames, clocks, plants and more. Colour:Yellow Material:steel Package Contents: 50x Gypsum board expansion screws Only the above package content, other products are not included. Note: Light reflection 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.