FEATURES:1. Thicken Chain, Thicken Basement, extra durable!2. Any installation course is available: you may make it vertical, horizontal or oblique direction.3.Two Intallation ways: screw installation or nail-free glue installation.4. Please word while you install it by nail unfastened glue, please depart it for 5days earlier than using, so that it can paintings stably and maintain safe.PARAMETERS:Brand: NAIERDIProduct Name: 304 Stainless Steel Security Door Chain LockMaterial: 304 Stainless SteelColor Brushed Silver/Brushed Gold/Red Bronze/Green Bronze/BlackApplications: Door Latch Lock, Window Latch, House Gate Anti-theft Lock, Hotel Room Security LockPackage includes: 1 x lock ( you may choose screw set, or screw and glue set )NOTICE:1. Real color might show different in numerous monitors or below different light, please talk about the color of the product actually received.thank you!2. Please allow 1-3mm error thanks to guide measurement,please ensure you don't intellect earlier than you bid.