Screw: Type: M4, M5 Fastener Type: Machine Screw Screw Material: Tungsten Steel Screw Drive Type: Torx Coating: Black Oxide Model Type Size Style: A Blade Square 14mm Style: B Blade Square Round 15mm Style: C Blade Round 12mm Style: D Blade Chamfering 1pc 28mm Style: E Blade Sharpe 1pc 30mm Screw: M4 M4-10 Screw: M5 M5-12 Features: -The rotation of the Milling cutter gives you many fresh edges without sharpening. - Good chemical stability, heat resistance, good wear resistance, high hardness. - High precision, stable performance. - Easy to use, not easy to rust. - Durable in use. - Perfect for woodworking. - Mutil type meets all your woodworking DIY needs. - M4 screws are suitable for C, D, E type blades, M5 screws are suitable for A, B type blades. Application: Ideal for giving you a smooth finish on curved and concave surfaces, hollowing work and for general turning applications. Package includes 7 pieces