THIS IS A MAC TOOLS 2 PIECE 3/8 & 1/2 DRIVE UNIVERSAL JOINT IMPACT SOCKET ADAPTER. THE PART NUMBERS ARE: XUP2PA, VUP2BA. THERE IS A 3/8 DRIVE & 1/2 DRIVE IMPACT UNIVERSALS. THE 3/8 DRIVE IS THE PIN STYLE & 1/2 DRIVE IS THE FRICTON BALL STYLE. THESE ARE IN GOOD WORKING CONDITION. THERE ARE NO OWNERS MARKS. 129L1C12. FREE SHIPPING IN THE USA SHIPPING METHOD:YOU WILL ALWAYS GET IT SHIPPED SUPER FAST WITH USPS POST OFFICE 2 TO 3 DAYS PRORITY MAIL SHIPPING IF WITHIN THE USA.QUESTIONS: I TRY TO DESCRIBE ITEMS THE BEST I CAN. IF YOU HAVE ANY QUESTIONS BEFORE THE END OF THE SALE PLEASE ASK.