3/8" (EU: 0,95 cm) drive male and 1/4" (EU: 0,64 cm) drive female for use with sockets for smaller front axles 3/8" (EU: 0,95 cm) square drive is rated for a maximum torque of 90 lb/ft (EU: 122,02 NM) Allows T-6 Combo LeverÖ to be used as a 3/8" (EU: 0,95 cm) driver Coin knurled to facilitate turning sockets by hand Lightening holes. TOOL DR ADAPTER 27MM 3/8