PSI Woodworking LA341018 Headstock Spindle Adapter (3/4-Inch x 10tpi to 1-Inch x 8 tpi chuck)
Price 14.11 - 16.95 USD
Adapts a spindle thread of 3/4-inch-by-10 tpi to a 1-inch-by-8 tpi chuck * Made of steel * Has flats to allow wrench to hold when tightening * Permits the use for different size accessories * Extends the spindle over 1-inch