The Sealey Siegen S01135 set includes 26 pieces of T-Handle and Standard Security/TRX-Star* keys, all neatly organized in a tool tray. Manufactured by Sealey in the United Kingdom, this speciality Allen/Hex Wrench set is designed for various applications where specific measurements are required. The product offers a range of sizes to meet different needs, making it a versatile and essential addition to any garage or workshop.