Description: Made of high quality aluminium alloy for durability. High hardness and strength, very wear-resistant. The clamp is adjustable with rotating knob to fit different thickness of wood boards. Comes with drill bits and wood hole cutter for making different sizes of holes. It is a great tool set for both furniture factory and woodworking enthusiasts. Specification: Material: Aluminium alloy Color: Blue, Silver Size: Approx. 10x 9x 7cm/ 3.94x 3.54x 2.76inch Package Includes: 1 Piece Drill Guide 1 Piece Pin Spanner 1 Piece Hex Key 2 Pieces Drill Bits Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test