Product: Impact Grade Socket Adapter/Extension Set Turns Power Drill Into High Speed Nut Driver,1/4-Inch Hex Shank to Drive for Adapters to Use with Drill Chucks, Sizes 1/4" 3/8" 1/2", Cr-V, 8 Piece
Brand: GXF
Q: Is this adapter a 1/2 " drive?
 A: This set of adapter reducers consists of 1/4" to 3/8", 3/8" to 1/4", 3/8" to 1/2", and 1/2" to 3/8". If you order one set, you will get four reducers. 

 Q: What is Impact?
 A: It's a type of wrench/driver that allows you to use an impact wrench if needed to loosen a nut or bolt without the adapter breaking, or you can just use it for every jobs that don't require an impact wrench. 

 Q: Would the impact adapters fit a normal ratchet?
 A: They're specifically meant to be used with high-torque impact tools and applications. Impact reducers will fail at much lower torque values when incorrectly used in place of chrome reducers on breaker bars and hand ratchets. If you're only using them with non-impact hand tools, better to get the chrome non-impact kind. 

 Specification
 1/2" to 3/8": 12.7mm square hole to 9.53mm square head
 3/8" to 1/4": 9.53mm square hole turn 6.35mm square head
 3/8" to 1/2": 9.53mm square hole turn 12.7mm square head
 1/4" to 3/8": 6.35mm square hole to 9.53mm square head

 Package includes
 Each Impact Adapter Reducer(Total 4 Pieces) 
 - 1/2" Drive (F) → 3/8" Drive (M) Reducer 
 - 3/8" Drive (F) → 1/4" Drive (M) Reducer 
 - 3/8" Drive (F) → 1/2" Drive (M) Adapter 
 - 1/4" Drive (F) → 3/8" Drive (M) Adapter

【Premium Quality】:Made of heat treated Chrome Vanadium Steel by coating black oxide, have a good performance on withstanding the normal torque compression.
【Product Size】:This set includes a wide array of adapters and reducers. It will add great versatility by including the following conversions and sizes 3/8" to 1/4" reducer, 1/2" to 3/8" reducer, 1/4" to 3/8" adapter, 3/8" to 1/2" adapter.
【Unique Design】:Allows greater flexibility for sockets and drive tools and maximizes the versatility of ratchets and sockets. Spring loaded detent balls keeps your sockets secure with through holes that allows the use of locking pins and rings.
【Package Includes】:3/8" to 1/4" reducer, 1/2" to 3/8" reducer, 1/4" to 3/8" adapter, 3/8" to 1/2" adapter
【Quality Guarantee】: 30-Day unconditional refund &12-Month replacement warranty.

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