T-shaped head engages into the loosening slot of the filter bottom
suitable for the following models:

VW, Audi, Seat, Skoda, Volvo with following filters:
Mahle / Knecht OC51, OC83, OC214
Mann W920, W920/7, W930, W930/9, W940, W940/15 W940/20, W940/25, W950, W950/5, W962/2, W962/7, W962/14, W1130/1, WK940/4, WK950/4, WK962/5, WP931, WP962/3
Technical data
Drive profile: Internal square
Drive profile size, metric: 10 mm
Drive profile size, inch3/8 “
Gross weight: 50 g