Milwaukee 3/8" Drive 3/8"F X 1/4"M Adapter 42-04-9112 - The Home Depot
Milwaukee 3/8 in. Square x 1/4 in. Hex Shockwave Impact Adapter 48-03-4405 - The Home Depot
TR TOOLROCK 11pcs Impact Adapter and Reducer Set and Universal Joint Swivel Socket Adapter Set, 1/4" 3/8" 1/2" 3/4" Drive Socket Adapter Set with Durable Case - Amazon.com
Milwaukee Adapter 1/4" Drive 1/4"F X 3/8"M 42-04-9110 from Milwaukee - Acme Tools
MILWAUKEE, 1/4 in Input Drive Size, Black Oxide, Hex Drive Socket Adapter - 5ECA9|48-32-5031 - Grainger
Milwaukee 49-66-6742 Impact Duty 1/4 - 1/2 Drive Adapter Set
Milwaukee 3/8 in. Square x 1/4 in. Hex Shockwave Impact Adapter 48-03-4405 - The Home Depot
Milwaukee 48-32-5721 SHOCKWAVE Insert 3/8 in. Socket Adapter (10 PC)
Milwaukee 48-32-5731 SHOCKWAVE 1/4 in. Hex to 3/8 in. Square Socket Adapter 10 pk
MILWAUKEE, 1/4 in_3/8 in_1/2 in Input Drive Size, Black Phosphate, IMPACT ADAPTER SET - 61DN82|49-66-6742 - Grainger