For cutting thick objects, Material: Body: ABS, Holder: Stainless steel, Blade: SK120 (formerly SK2), Color: Yellow, Total Length: 5.9 inches (150 mm), Blade Width: 0.7 inches (18 mm), Blade Thickness: 0.02 inches (0.5 mm), Weight: 3.9 oz (85 g), This is a strong screw-type lock. Includes 2 replacement blades (replacement blades can be stored in the main unit. Sturdy 0.8mm thick blade holder with pitch feed system to prevent blade sliding