J&amp;R Quality Tools 4-Inch Extra Long XZN Triple Square Spline Bit Socket Set， S2 Steel | 10-Piece Set<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>100% SATISFACTION GAURANTEE</li><li>Chrome Vanadium Steel Sockets with a Mirror Polished Finish</li><li>S2 Steel Bits， Overall Length: 4"</li><li>1/4" Drive: 4mm. 5mm， 6mm， 3/8" Drive: 8mm， 9mm， 10mm， 12mm， (14mm Tamper-Proof)</li><li>1/2" Drive: 16mm (Tamper-Proof)， 18mm (Tamper-Proof)</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51RvfaVO9ML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/5137q7mqyKL.jpg" noproxy>