3/8" Keyless Drill Chuck Adaptor for Cordless Impact Driver With Locking Ring FREE SHIPPING SAME DAY ON ALL ORDERS IN BY 3:00 PM - NO MINIMUM Instant conversion from driving to drilling using the 1/4-inch hex quick connect shank 3-Jaw chuck works with drill bits up to 3/8" Fiber re-enforced composite material provides strength Locking Ring firmly secure drill bit into the chuck.