Origin:Mainland China Feature: Portable and Practical: Adjustable T Track hold down clamps are very easy to install, can accommodate 30mm materials and hold them firmly in place. Wide Range of Use: Not only suitable for 3018 series desktop CNC router machines, but also suitable for positioning and fixing other woodworking or metalworking,such as drill presses, CNC, table saws, routers, jigs, vertical milling machines, etc. Strong and Sturdy: Made of high quality zinc-aluminum alloy, strong and wear-resistant, long service life. Specification: Material:metal colour:Silver Size:as picture show Compatibility: The T-Track clamp kit is compatible with 3018-PRO/3018-MX3/3018-PROVer/1810-PRO CNC router machine, it can hold most of the materials of a desktop CNC router machine. Quantity:4set Package Contents: 4set x t track Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Manual measurement, please allow 1-10mm error.