FIELD OF APPLICATION: U-shaped drills, taper shank drills, extension rods, milling rods, inside diameter cutting rods and straight shank tools can be loaded. MODEL APPLICABLE: suitable for SBHA20-32, SBHA25-32, SBHA32-32 tool holders. FUNCTION: It can improve tool stiffness and extend blade life. AUTOMATIC CENTERING: Easy to install, self-centering, flexible and practical, more precise centering. HIGH-QUALITY STEEL 40CR: Casted from premium 40Cr material, high hardness, high strength, not easy to break. Specification: Condition: 100% Brand New Item Type: Tool Ring Model: D32-18 Material: Steel high quality 40cr Accuracy: 0.01mm Handle diameter (outer hole diameter): 32mm Clamping diameter (inner hole diameter): 18mm Model: D32 -20 Material: 40cr high quality steel Accuracy: 0.01mm Handle diameter (outer hole diameter): 32mm Clamp diameter (inner hole diameter): 20mm Model: D32-25 Material: 40cr high quality steel Accuracy: 0.01mm Diameter of handle (outer hole diameter): 32mm Diameter of clamping (inner hole diameter): 25 mm Tool holder for D32: SBHA20-32 SBHA25-32 SBHA32-32 Optional style: D32-18 / D32-20 / D32-25 .we -text table td, .we-text table th,;. w-e-text table, Package list: 1 x tool holder sleeve