Description: Brand New and High Quality. Features: Made of 45 steel, high hardness, wear-resistant, very durable and has a long service life. Fine workmanship, excellent made, high precision. Four sizes (89mm150mm230mm305mm) can meet the length requirements of wood turning. With a curved design, it is better to protect your safety. Arc knife contact surface, which makes it easier and faster to adjust the angle of the knife. Specifications: Material: 45 steel Color: Silver Shank Diameter: 16mm0.63 in Size: A Type: 89mm3.5 inch x 70mm2.76 in B Type: 150mm6 inch x 80mm3.15 in C Type: 230mm9 inch x 70mm2.76 in D Type: 305mm12 inch x 85mm3.35 in Package Include: 1Pc x Tool Rest (4 Size are Optional.)