Amazon.Com The 20-Piece X6 Pass-Through Ratchet/Socket Set (View Larger).More Capable Than Average Tools, Every Crescent X6 Series Product Enables You To Grip Six Different Types Of Fasteners: Hex, 12 Point, Partially Rounded Hex, Square, External-Torx (E-Torx), And Spline. This 20-Piece Pass-Through Ratchet And Socket Set (Model Cx6Pt20) Works Even Where Deep Sockets Wont -- So You Dont Neet Two Sets Of Sockets Any More. Each Pass-Through Socket Replaces One Deep And Standard Socket, And The Pass-Through System Works Over Long Threaded Rod Where Normal Ratchets And Sockets Wont Fit. This Package Includes A 3/8-Inch Adapter That Allows For Use With Standard Square Drive Sockets. Grips Six Different Fasteners (View Larger).Whats In The Box20-Piece Pass-Through Socket Set With Ratchet, Adapter, Storage Tray, And The Following Sockets:10, 11, 12, 13, 14, 15, 17, 18 And 19Mm3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16 And 7/8-Inchabout Crescentcelebrating Its 100Th Anniversary In 2007, The Crescent Brand Adjustable Wrench Is The Flagship Tool And A True American Icon. It Is Prized By Tradesmen And Homeowners Alike For Its Utility And Durability. Today, Crescent Offers Many Other High Quality Tools, Including Tongue And Grove Pliers, Locking Pliers, Screwdrivers, And Nutdrivers.Cx6Pt20 X6 Pass-Through Ratchet And Socketsat A Glanceinnovative X6 Design Of The Socket Allows You To Grip 6 Different Types Of Fastenersworks With Hex, 12 Point, Partially Rounded Hex, Square, External-Torx (E-Torx), And Splinepass-Through System Works Over Long Threaded Rod Were Normal Ratchets And Sockets Wont Fitlaser-Etched Sizing To Make Recognition Of The Correct Size Tool Quick And Easy Product Description Crescent X6 Pass Thru Ratchet And Sockets Set Provides You With The Innovation Of The X6 Design In The Box End Allowing You To Grip 6 Different Types Of Fasteners, The Convenience Of Every Pass Thru Socket Replacing One Deep And Standard Socket And Clearance Of The Low Profile Ratchet And Socket Combined. This Set Includes The Following Sizes: 10, 11, 12, 13, 14, 15, 17, 18 And 19Mm & 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16 And 7/8 Inch .