Features THREAD SPECIFICATION: The female thread of the woodworking lathe head spindle adapter is 1"-8 TPI, and the male thread of the installation chuck is 3/4"-16 TPI. STRONG MATERIAL: The spindle adapter body of the lathe head 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 1.89 inches and the product dimensions (L x W x H) are 4 x 4 x 3.2 cm, which will extend the shaft length by about 3.2 cm. APPLICABLE SCENARIO:The steel faceplate chuck for wood lathe can accept threaded mandrels, faceplates and other wood turning tools and accessories. Flat parts allow for solid grip of wrench for tightening and loosening ACCURATE AND STABLE: The head spindle adapter is easy to clean and maintain for continuous optimal performance, the lathe spindle adapter for woodworking adopts precise production with stable characteristics and high reliability. 1. THREAD SPECIFICATION: The female thread of the lathe head spindle adapter for woodworking is 1"-8 TPI, and the male thread of the installation chuck is 3/4"-16 TPI 2. STRONG MATERIAL: The spindle adapter body of the lathe head is made of excellent alloy steel material, which can greatly extend the service life 3. SIZE INFORMATION: The weight of the adapter is 100g, the length is 1.89 inches, and the product dimensions (L x W x H) are 4 x 4 x 3.2 cm, which will expand the shaft length by about 3.2 cm. 4. APPLICABLE SCENARIO:The steel faceplate chuck for wood lathe can accept threaded mandrels, faceplates and other wood turning tools and accessories. Flat parts allow for solid grip of wrench for tightening and loosening 5. ACCURATE AND STABLE: The head spindle adapter is easy to clean and maintain for continuous optimal performance, the lathe spindle adapter for woodworking adopts precise production with stable characteristics and high reliability. Specification: Item Type: Woodworking Lathe Head Spindle Adapter Material: #45 Steel Male Thread:1"-8TPI Female Thread: 3/4"-16TPI Size (L x W x H): approx. 4 x 4 x 3.2 cm/1.6 x 1.6 x 1.3 inches. Colour: black. How to use: Direct installation and use Packing List: 1 x Woodworking Lathe Head Spindle Adapter Package List 1 x Woodworking Lathe Headstock Spindle Adapter