ITEM NAME:2Pcs Air Impact Ratchet Socket Adapter Converter Vanadium 3/8 To 1/4 1/4 To B9P3 2Pcs Air Impact Ratchet Socket Adapter Converter Vanadium 3/8 To 1/4 1/4 To B9P3 Product Description:Durable impact socket adapter and reducer set. These tools adapt to the situation on the fly to get it done. They create replacements for lost or broken sockets, expand incomplete socket sets, and Allows greater flexibility for all sockets and drive tools. Ball detent securely holds sockets on the coupler. Made of the highest quality chrome vanadium steel, each piece undergoes a precise heat treating process, hardening and strengthening it for use with impact wrenches and drivers. Model: 539675 Name: Air Impact Socket Adapter Material: Chrome Vanadium Steel Size:37mm*18mm/1.46*0.71 inch,27mm*17mm/1.06*0.67 inch Hardness: (HRC) 40 +/- 2 Color: Black Application: Replacements for lost or broken sockets, expand incomplete socket sets, and Allows greater flexibility for all sockets and drive tools. Manufactured from chrome vanadium steel. 3/8 inchdr to 1/4 inch Step Down. (3/8 inchdr Ratchet or bar to 1/4 inch dr Socket) 1/4 inch dr to 3/8 inch Step Up. (1/4 inchdr Ratchet or bar to 3/8 inch dr Socket) Ball bearing to stop the socket from falling off when using. Suitable for Impact gun use. Package included: 1 x 3/8 inch To 1/4 inch Impact Socket Adapter 1 x 1/4 inch To 3/8 inch Impact Socket Adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.