Features:Made from aluminum alloy, heat treated for durability. Wear-resistant, long service life. High hardness and wear resistance, very wear-resistant. Adjustable knobs to accommodate different thicknesses of wooden slats. Comes with a drill and a wooden cookie cutter to make holes of different sizes. This is a great tool set for furniture making and woodworking enthusiasts. Features: Material: Aluminum alloyModel: A/B (optional)Surface treatment: AnodizedDrilling tip position: 8mm, 10mm, 15mm Hole opener: 15mmScale: Laser engraving (no screen printing, marking will not wear off after long-term use)Package size:A: 25 * 18 * 5cm / 9.84 * 7.09 * 1.97in B: 20 * 16 * 5cm / 7.78 * 6.3 * 1.97in Package weight: To: 800g / 1.76 lb / 28.22 oz B: 850 g / 1.87 lb / 29.98 oz Note: Please allow 1-3 cm difference due to manual measurement. The item's color may be slightly different from the picture due to different lighting and screen display.