The unit works well, with clean threads and smooth machining. The jig handles material is from 1/4-inch to 6-inch thick, and it is really precise. The 1/4-inch to 6-inch thick adjustable clamping range of this Eagle America Professional Dowel Jig makes it perfect for different stock thicknesses. The jig is made from durable anodized aluminum and steel for long service life and precise alignment. The set comes with a 3/8", 1/2", and 5/8" drill bit to accommodate different dowel sizes. The Eagle America Professional Dowel Jig is perfect for creating clean and accurate dowel holes in the workpieces. PROS🟢 Extreme precision and ease of use Reliable drill stop Hard plastic and high-quality metal CONS🔴 Somewhat bulky