brand new and high quality Features: 1. Suitable for dringlling dowel holes and pocket holes. 2. Long lasting service life provided as it is made from excellent-grade material. 3. Easy to adjust drilling height and depth. 4. Adjustable dowel-hole drill guide is for different thickness, whick makes it easy to produce joints. 5. It is convenient to fix drill guide on the wood with self tighten clamp. How to drill a pocket hole: 1. Adjust the drill height in accordance with wood thickness. 2. Tighten up the clamp tand fix the drill guide on the wood. 3. Put the step drill into the locating hole. 4. Turn on drill and set drilling speed within 500-1500rpm. 5. Drill slowly at the beginning. Warning: Keep drill for head away from wood before turning on drill. Specification: Material: 6063 Aluminum alloy +Titanium plating Type: Drill Guide Color: Shown as pictures Dowel-Hole Diameter: Approx.8mm Pocket-Hole Diameter: Approx.9.5mm Drilling Thickness: Approx.40mm Package Size: 20 x 11 x 14cm(7.87 x 4.33 x 5.51in) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Drill Guide 1 x Step Drill Bit 1 x Screwdriver Bit 1 x Hole Saw 1 x Wrench 1Pack x Screws And Plugs(Without Specific Amount)