WERA Insulated TORX Bit Torx Size Total Length 004923 3/8DR Socket, 30mm, 55mm,

Insertion size (inch): 3/8, Torx size (TX): 30, Total length (mm): 55 Even if the outer red insulation layer becomes damaged, the yellow insulating core inside keeps you safe. They are individually tested with a 10,000 volt hot water test device to ensure safe operation at a voltage tolerance of 1,000 volts. The surface is protected by plastic coating. A very short and compact 3/8" bit socket for electrical work, allowing you to work in tight spaces.