Specification: M8 female thread; zinc alloy, galvanized, anti-rust and anti-corrosion. Overall Size: 27 x 13 x 11mm(L*H*D) Application: Fixing plates, blinds, drums, cymbals, music stand, folding chairs, quick clamps, home furnishing, fixing racks, etc. Advantage: It is used in places where frequent adjustment or disassembly of fastener connections is required. No tools are required to install the product, just turn your hand to complete. Notice: When locking, you must confirm the thread specifications and clean the thread surface to avoid thread slipping. Feature: Easy to install and disassemble, reusable. Quantity: 10 pieces Note: It does not include other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thanks!