Material: Aluminum alloy and plastic The red part is made of plastic Size: 11* 3.7*8.6 inches (28*9.5*22 cm) Color: Red Packing list: 1 x Drilling positioner (drill and drill bit not included) Features Easy to operate The Drilling Woodworking Drill Positioner is designed to make drilling wood easier, straighter and more accurate. It uses a 1/4-inch hex shaft and can be used with cordless and corded drills as well as impact drivers. The multi-use fence can be attached to any square base on these 4 sides. Additionally, guardrails can be used in multiple directions. It can also be used as the edge of a board. The built-in hex bit has two pins in the center and can be stored on the boat when not in use. When used, they are screwed into the bottom of the base and can be tightened using one of the post caps with a built-in hex bit. Maximum Size Our woodworking drill bit locator has a drill bit capacity of 1 inch, but if you remove it and turn it upside down, you can install drill bits up to 2 inches wide. The V-shaped groove on the base makes it easy to drill into the center of logs such as logs. Complete accessory kit includes key chuck, tapered depth control shaft and limit ring, spring return, reversible chuck bracket, built-in V-groove, centering and adjustable fence. Drilling method: 1. Adjust the drilling height according to the plate thickness. 2. Tighten the clamps to secure the drill guide to the board. 3. Place the step drill bit into the pilot hole. 4. Turn on the electric drill and set it to a certain speed of 500-1500rpm. 5. Before drilling half of the step drill bit into the wood, drill slowly for greater accuracy.