Feature:1. THREAD SPECIFICATION: The female thread of woodworking lathe headstock spindle adapter is 1in8TPI, and the male thread of the installation chuck is 3/4in16TPI2. STRONG MATERIAL: Lathe headstock spindle adapter body is made of excellent alloy steel material, which can greatly extend the service life3. SIZE INFORMATION: The weight of the adapter is 100g, the length is 1.89in, and the product dimension(L x W x H) are 4.1x4.1x3.2cm, which will extend the spindle length by about 3.2cm4. APPLICABLE SCENARIO: Wood lathe steel faceplate chuck can accept threaded chucks, faceplates, and other woodturning tools and accessories. Flats allow for solid wrench tool grip for tightening and loosening5. ACCURATE AND STABLE: Headstock spindle adapter is easy to clean and maintain for continued optimal performance, woodworking lathe spindle adapter adopt accurate production to the stable characteristics and high reliabilitySpecification:Item Type: Woodworking Lathe Headstock Spindle AdapterMaterial: No. 45 steelMale Thread: 1in-8TPIFemale Thread: 3/4in-16TPISize(LxWxH): Approx. 4.1 x 4.1 x 3.2cm / 1.6 x 1.6 x 1.3inColor: Black.Package List:1 x Woodworking Lathe Headstock Spindle Adapter