uxcell Home Office Security Slide Bolt Door Safety Chain Lock Guard Latch Chain Fasten Part Size: 81 X 22mm/ 3.2" x 0.9"(L*W); Move Part Hole Distance Size: 92 x 21mm/ 3.6" x 0.8"(L*W); Chain Fasten Part Hole Distance Size: 30mm/1.2", 25mm/1" Total Dimension: 35 x 3.4cm/ 13.8" x 1.3"(L*Max.W); Mounting Hole Size: 5.4mm/0.2"; Chain length: 185mm Chain Move Part Size: 117 x 34 x 8mm / 4.6'' x 1.3'' x 0.3''(L*W*H); Package Content: 1 x Door Safety Chain, 7 x Screws; Product Name: Door Safety Chain Material: Zinc Alloy,Faux Leather; Weight: 159g Mounting Hole Diameter: 5.1mm/ 0.2"; Main Color: Red Bronze, Black