[For Standard M loc System]Our T-nut and screws replacement sets, perfectly work for standard mlock accessories and fits standard m loc rail mounts. Set of 10 provide you enough choices for any mlock accessories replacement. [Available In 10/12mm Length Screws]We provide 10/12mm screws for your choice, which can fix more firmly and won't worry screws are too short and pop out. You can chose according to your need. [T-Nut Self-Locking Design]Added the self-locking reusable thread patch to the screws to make sure it fix tightly and keep safe. [Premium Durable Steel Material]Made of high strength steel and in black anodizing finish which can prevent the surface from rust and anti-slip. [Easy To Install]Quick and easy replacement of t-nut screw, simple to install and remove with the hex wrench tool. Includes 10Pcs t-nuts, 10Pcs screws, 1Pc allen wrench. Specifications: Material: High strength steel Finish: Black anodizing finish Length: 10/12mm Package Included: 10x Screws 10x T-Nuts 1x Allen Wrench Note: 1. Please note that the photo does not show actual size please refer to Description for size details. 2. Please allow differences due to manual measurement thanks. 3. Due to the difference between different monitors the image may not reflect the actual color of the item.