Specification: 100% brand new and high quality Material: Alloy blade+Carbon steel handle Shank Length: 1/4" (6.35mm) Features: Cutting sharp, smooth rotation, brisk operation; High hardness, good wear resistance, greatly improve the life; Applicable models: the engraving machine, trimmer; The main function: trimming, three-dimensional clearance angle, slotted; Scope: wood, hardwood, particleboard, MDF, acrylic; Please refer below Size to choose: No.1 Shank diameter: 1/4inch; Blade diameter: 1/2inch; Blade length£º11.9mm; Total length: 45.5mm No.2 Shank diameter: 1/4inch; Blade diameter: 1/2inch; Blade length£º25mm; Total length: 63mm No.3 Shank diameter: 1/4inch; Blade diameter: 1/2inch; Blade length£º20mm; Total length: 65mm No.4 Shank diameter: 1/4inch; Blade diameter: 5/8inch; Blade length£º20mm; Total length: 63mm No.5 Shank diameter: 1/4inch; Blade diameter: 1/2inch; Blade length£º38mm; Total length: 72mm No.6 Shank diameter: 1/2inch; Blade diameter: 3/4inch; Blade length£º50.8mm; Total length: 102mm Note: -At the trepanning,please wear good protective measures,in case of wood chips splash damage eyes.Size for manual measurement, there may be a 0 to 5 mm error, belongs to the normal phenomenon. -The cutter is sharp enough,please get away from children. -Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!! Package Included: 1 x Woodworking milling cutter