Features: brand new and high quality. Feature: Milling laze collet chuck holder, straight shank, clamping nut, make you work better, more efficient, more durable processing products. High Hardness: Turning tool holder adopts excellent manufacturing process that high temperature quenching, greatly improve the hardness, wear resistance, fatigue strength and toughness. High Quality: Turning tool holder is made of high-speed steel material, with high hardness and strength, which can be used for a long for time. Safety: The manufacturing and production of the products follow strict product quality control standards. The product performance is stable and the quality is reliable. Widely Applications: Suitable for various CNC turning, boring machines, and milling machines. Specifications: Material: High Carbon steel Size: approx 9x3cm/3.54x1.18 inches Type: SHB12-3/4/5/6 SHB16-3/4/5/6/7/8 SHB20-3/4/5/6/7/8 Package Includes: 1 Piece Small Diameter Boring Tool Bar note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!