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. It is a great tool set for both furniture factory and woodworking enthusiasts. Punching a 8mm thread rod hole ; Punching a 15mm eccentric wheel hole; Punching a 8/10mm swell hole; Punching a 8/10mm dowel hole on the side of plank; Punching a 8/10mm dowel hole on the perpendicular wood of plank Specification: Material: Aluminium alloy Surface treatment: anodized Color: As Pictures Shown Size: Approx. 8.6x 5x 5cm/ 3.38x 1.97x 1.97inch Package Includes: 1 Piece 08500 hole puncher 1 Piece 08300 hole puncher 1 Piece 8mm drill bit (with stop ring) 1 Piece 10mm drill bit (with stop ring) 1 Piece 15mm hole puncher ( with stop ring) 1 Piece wrench as half moon 1 Piece Allen wrench Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test