Question: can i put a 1/2 chuck on a 3/8 drill?
Answer: Yes, a half inch drill can use any bit up to and including a 1/2″ bit. A 3/8″ drill any bit up to and including a 3/8″ bit. A 1″ drill any bit up to and including 1″ bit. Larger drills may have problems with very small bits.