Features THREAD SPECIFICATION: The female thread of woodworking lathe headstock spindle adapter is 1in‑8TPI, and the male thread of the installation chuck is 3/4in‑16TPI STRONG MATERIAL: Lathe headstock spindle adapter body is made of excellent alloy steel material, which can greatly extend the service life 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 3.2cm 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 loosening 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 reliability Spec: Item Type: Woodworking Lathe Headstock Spindle Adapter Material: No. 45 steel Male Thread: 1in-8TPI Female Thread: 3/4in-16TPI Size(LxWxH): Approx. 4.1 x 4.1 x 3.2cm / 1.6 x 1.6 x 1.3in Color: Black How to Use: Direct installation and use Package List: 1 x Woodworking Lathe Headstock Spindle Adapter Package List 1 x Woodworking Lathe Headstock Spindle Adapter