This is directly derived from the manufacturer's product text

Dimensions: d1=14 mm

The product text specifically mentions its use by the following professional groups:

Hexagon head (square drive): 1/4"

The information is taken from Intercable Tools' product list for "Rohrkabelschuhe Reinnickel" (type ICNI26)

T-nøgle, unbrako 8x150mm ER930300 This is directly derived fromL key with T handle The Wiha 00929 is an L key with a T handle designed for internal hexagon connections. The product is identified on the manufacturer's website as variant 00929 with an internal hexagon size of 8. 0 mm and a T handle blade length of 150 mm. Details The manufacturer's description specifies materials, dimensions, and construction without additional claims regarding application beyond its mechanical purpose. Relevant technical points