impact Adapter and Reducer set -8 Piece Heavy Duty Pro. Impact drill and Drive Adapter- by Katzco WHAT YOU GET: The 8 pcs heavy duty socket impact adapter includes 1/4" F x 3/8" M , (45ft.lb.), 3/8" F x 1/2"M ,(145ft.lb.) 1/2" F x 3/4 M , (350ft.lb.) 3/4". F x 1" M, (1000ft.lb), 3/8" F x 1/4"M, (45ft.lb.), 1/2" F x 3/8 M, (145ft.lb.), 3/4" F x 1/2" M , (350ft.lb.), 1" F x 3/4" M, (1000ft.lb), WHAT TO EXPECT: Its heavy duty and strong. Engineered for use with impact drivers. Sizes Etched for easy identification. Multiplies the range and capability of your socket system WHAT IS IT FOR: Reducer Set. Engineered for use with impact drivers, these problem solvers give you more options for dealing with the unexpected. They create solutions for lost or broken sockets, fill the gaps in incomplete size ranges, and extend the capability of your existing socket system. QUALILTY MATERIALS: Made of premium chrome vanadium steel. Long life time. With a protective black oxide finish Spring-loaded detent ball securely latches onto sockets, preventing them from being dropped ABOUT US: Katzco will make sure that you will be satisfied with the 8piece Impact socket adapter and reducer set. You buy from us. You are protected with our 100% No Questions Asked Guarantee for either a replacement or refund. We care about only putting out high quality products that satisfy your needs. If there is anything you need that we dont offer, we go and find the best for you