Weidmueller TH-S 9-40

TH-S 9-40 likely refers to a set of hex keys (Allen wrenches). "TH-S" probably indicates the brand or product line. "9-40" likely refers to the range of hex sizes included in the set, from 9mm to 40mm. Therefore, this is likely a set of hex keys covering sizes from 9mm to 40mm.