The Snap-on Two-Piece 3/8-inch Drive Impact Swivel Extension Set, No. 202IPFX, is designed for optimum strength, durability and versatility. Technicians can use any shallow, semi-deep, deep, six-point, 12-point metric or fractional impact socket with this extension set. Competitive products can include a fixed-size socket at the end of the extension, which creates the need for a technician to buy an entire set of swivel extensions to be equipped with the various fastener sizes required to get the job done, according to the company. The Snap-on laser-welded pivot pin provides a smooth, full 30-degree swivel for an efficient power transfer. The set contains 6" (No. IPFX6) and 9" (No. IPFX9) swivel extensions crafted from alloy steel that are heat-treated for long-lasting performance.