This is a kind of fine quality CNC arbor, made of fine toughness and hardness material, can provides long service life. Fine low temperature impact toughness, improved the surface gloss of the cutting pieces. It can reduce the tool grinding cost and improve the cutting efficiency. You can have a try. Warning: Use safety precaution such as guards and eye-protect device before using the tool. Exchange a tool when it occurs problem such as a noise, vibrations and a flame. Specifications: Name: Milling Tool Holder Material: stainless steel #43; plastics Model(turning tool #43;insert): S08K-12 #43;SDUCR07, S08K #43;SCLCR06, SCMCN #43;0808F06, SCLCR #43;0808F06, SDJCR #43;0808F07, SDNCN #43;0808F07, MGEHR #43;0808-02 (ALL) Wrench: MGEHR: T10 SDJCR: T8 S08K-12: T8 SDNCN: T8 SCLCR: T8 SCMCN: T8 S08K: T8 Turning tool size: MGEHR: 100 * 8 * 8mm / 3.94 * 0.31 * 0.31in SDJCR: 81 * 8 * 8mm / 3.19 * 0.31 * 0.31in S08K-12: 125 * 8 * 8mm / 4.92 * 0.31 * 0.31in SDNCN: 81 * 8 * 8mm / 3.19 * 0.31 * 0.31in SCLCR: 81 * 8 * 8mm / 3.19 * 0.31 * 0.31in SCMCN: 82 * 8 * 8mm / 3.23 * 0.31 * 0.31in S08K: 123 * 8 * 8mm / 4.84 * 0.31 * 0.31in Turning tool with box weight: MGEHR: 72g / 2.54ounce SDJCR: 60g / 2.12ounce S08K-12: 71g / 2.50ounce SDNCN: 60g / 2.12ounce SCLCR: 63g / 2.22ounce SCMCN: 61g / 2.15ounce S08K: 65g / 2.29ounce Insert with box weight: 20g / 0.71ounce Package size: 222 * 150 * 45mm / 8.74 * 5.91 * 1.77in Package weight: 542g / 19.12ounce / 1.19lb Packing List: 7 * 8mm Milling Tool Holder 7 * Wrench 7 * Insert