21 Piece SAE & Metric Go-Thru Socket Set This ratcheting go-thru socket set is ideal for long studs Specialized go-through socket set lets you tighten nuts on long studs without "bottoming out." This SAE/Metric Go-Thru Socket Set comes with an adapter so you can use the wrench with your 3/8 inch sockets or 1/4 inch driver bits (both sold separately.) Reversible ratchet handle firmly grips sockets on the outsideEasy-to-read SAE and metric sizes3/4 inch reversible go-thru ratchet 21 Piece SAE & Metric Go-Thru Socket Set HBFT: 67974 Deep wall (y/n): No Finish: Polished Hex: No Material: . Chrome vanadium steel Quantity: 21 SAE or Metric: SAE & Metric Socket(s) included: 18 Drive size (inch): 3/4 inch Shipping Weight: 3.40 Pound Size(s): SAE Go-Thru Sockets: 5/16 in, 3/8 in, 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16 in, 3/4 in; Metric Go-Thru Sockets: 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm Accessories Included: 3 inch long go-thru extension bar for extra reachMax Value Hardware