Features: 1Can improve the rigidity of the tool and extend the life of the blade. 2Convenient clamping, automatic centering, the height of center is more accurate center. 3Suitable for U drill, taper shank drill, extension rod, milling cutter rod, inner diameter cutter rod, straight shank cutter and so on. 4D40 is applicable to SBHA25-40 and SBHA32-40. 5Made of high-quality steel 40Cr, high hardness, high strength, not easy to break. Condition: 100% Brand New Item Type: CNC Lathe Tool Holder Bushing Material: High Quality Steel 40Cr D40 Applicable Tool Holder: SBHA25-40, SBHA32-40 Optional Model: D40-18, D40-20, D40-25, D40-32 D40-18: Handle Diameter (Outer Hole Diameter): Approx. 40mm / 1.6in Clamping Diameter (Inner Hole Diameter): Approx. 18mm / 0.71in D40-20: Handle Diameter (Outer Hole Diameter): Approx. 40mm / 1.6in Clamping Diameter (Inner Hole Diameter): Approx. 20mm / 0.79in D40-25: Handle Diameter (Outer Hole Diameter): Approx. 40mm / 1.6in Clamping Diameter (Inner Hole Diameter): Approx. 25mm / 0.98in D40-32: Handle Diameter (Outer Hole Diameter): Approx. 40mm / 1.6in Clamping Diameter (Inner Hole Diameter): Approx. 32mm / 1.26in Package included:1 x&nbspTool Holder Bushing