Description:1. Suitable for jamb on fence, patio, wood, double or other composite doors, offers concealed locking for active leaf and inactive leaf.2. Constructed from 201 stainless steel, it is sturdy and wear-resisting for dry residential daily use. Not recommend use in bathroom and outdoor.3. This mechanism comes with a reasonable interior design, do not worry about felling apart suddenly when using.4. With comfortable touching and concealed style, it will surely offer you enjoyable usage and perfectly finished to complement your decor.5. Recommend purchasing two for the top and bottom of the door, which will make the door more stable and extend the life of the bolt.Specification:Material: 201 Stainless SteelFinish: Baking PaintingMain Body Size: 155mm x 20mm x 17mm / 6.10" x 0.79" x 0.67"(L*W*H)Bolt Size: 15mm x 10mm / 0.59" x 0.