Features High Quality 5V 1-Channel Relay Module: This module offers high-quality performance with a 5V power supply and 1-channel bistable self-locking relay, ensuring reliable and efficient . Convenient Trigger Control: Easily activate the relay by clicking the trigger port to pull it in and hold, and click again to disconnect, providing convenient and intuitive control. and Long Service Life: Constructed with high-quality materials, this relay module is and has a long service life, ensuring lasting reliability for your applications. High Accuracy and Strong Stability: With high accuracy and strong stability, this relay module is easy to install and use, delivering and reliable performance for various applications. Safe Low Pulse Trigger: The trigger mode is a low pulse trigger, providing a more convenient and safer for your peace of mind. Features: 1、Made of aluminum alloy material, the is anodized, and not easy to rust 2、CR12 metal drill sleeve with 6/8/10mm three specifications, high hardness and wear resistance 3、Widely used for positioning of wood boards when punching holes, good verticality, so that boards can be spliced better 4、Small body, easy to operate and convenient to carry, good helper for woodworking 5、Available in two colors for choice: Red and Blue Specification: Item Type: Woodworking Dowel Drill Guide Material: Aluminum alloy Specifications(optional): Red, Blue Size: Approx. 140 x 38 x 34mm / 5.5 x 1.5 x 1.3in Package List: 1 x Woodworking Dowel Drill Guide 3 x Limit Ring Package List 1 x Woodworking Dowel Drill Guide 3 x Limit Ring