Item Type: Collet Chuck HolderModel: MT3-FMB27-M12Material: Molybdenum SteelOverall Clamping Runout: 0.01-0.05Specification: M12Roundness: <0.8uBody Accuracy: 0.005MMCarburizing Depth: >0.8MMSurface Roughness: >0.8MMHardness: >HRC50- 55 DegreeStandard Speed: Below 10000rpm .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1EXCELLENT METAL: Made of excellent molybdenum steel, the surface quenching process increases the hardness of the object and is not easy to deform. 2STABLE STRUCTURE: Double side constraint of double side key, not suitable to shake left and right during heavy cutting to ensure the rigidity and comfort of machining. 3SCREW LOCKING: The chuck holder is locked with screws to ensure accurate and stable operation, with large chip removal space and high working efficiency. 4GOOD PERFORMANCE: Completely carburized and heat treated, internal and external diameter grinding, the chuck holder has high heat strength and oxygen resistance. 5EASY OPERATION: With fine workmanship, the taper shank chuck holder is easy to change, set and maintain, the blade can be used to process a variety of materials.