Hyjoy JT33-B18 1/8"–5/8" (3-16 MM) Drill Press Chuck, Triple-Grip with K32 Chuck Key

Steel construction: manufactured from 40 CR steel for increased durability and extended service life. Clamping range: 1/8 inch to 5/8 inch (3-16 MM) with concentric accuracy up to 0.005 inch. Design features: triple-grip jaws and precise rolling teeth provide secure, accurate bit holding. Adjustment: chuck tightness is set using a wrench or the K32 chuck key, allowing precise control over the grip.