Bondhus 12137 SAE L Shape Hex Key Set, 13 Piece, Long Length, 0.05 in to 3 8 in Tip Sizes, Alloy Steel, Black Oxide Finish, Standard End 12686265 IP69K Standards Bureau Veritas IP69K Standards Bureau Veritas Nominal Dial Size 1 1 2 in Primary Scale Pressure Range 0 to 60 psi Primary Scale Units psi Accuracy ±3 2 3% Process Connection Location Center Back Process Connection Type NPT Process Connection Gender Male Process Connection Size 1 8 in Gauge Case Material 304 Stainless Steel Case Color Stainless Steel Socket Material 316L Stainless Steel Sensor Material 316L Stainless Steel Lens Material Polycarbonate Liquid Filled Case No IP Rating IP66 NEMA Enclosure Rating 4X Country of Origin Brazil These sets have L shaped hex keys with a short arm that fits into tight spaces and a long arm that extends into recesses and other hard to reach spots 13 piece SAE set