Makita 3/8 in. Metal Keyless Chuck for Impact Driver 763198-1 - The Home Depot
Makita Adapter - Spline to SDS-PLUS T-01367/B-64163 - USA Granite Tools
SDS Max to SDS Plus Adaptor Chuck Drill Converter Shank Quick Tools for Bosch Makita and Other Rotary and Demolition Hammers: Amazon.com: Tools & Home Improvement
122574-2 - Drill Chuck Adapter SDS-PLUS
Makita P-18150 SDS-Plus Adapter with Automatic Chuck - Amazon.com