Compatible with 1" x 8 TPI Wood Lathes: Designed with a 4-inch outer diameter and an M33 x 3.5 mm internal thread, this 4-jaw wood lathe chuck includes a 1" x 8 TPI adapter. It is suitable for lathe spindles with 1" x 8 TPI threading, making it a practical choice for medium and large woodworking lathes.

Internal Grip, External Stabilization: Features a 4-jaw adjustment mechanism controlled by two locking bars. Offers an internal clamping range of 1.5-2.8 in/39-72 mm and an external support range of 2-3.5 in/50.5-89 mm, ensuring secure handling of various workpiece shapes.

Automatic Centering Mechanism: This lathe chuck is designed to automatically align your workpiece during high-speed rotation, reducing the need for frequent manual adjustments and enhancing machining precision and efficiency.

Secure Wood Mounting: This lathe chuck is equipped with a tapered screw, ideal for attaching flat wooden pieces. To fasten the workpiece efficiently, drill a hole at its center measuring 0.3 inches in diameter and 1 inch deep.

Robust Construction: Crafted from high-strength steel and coated with a nickel-plated finish to resist corrosion, this woodturning lathe chuck is designed to withstand moisture and dust. It ensures reliable performance during extended cutting and carving operations.