Oil service key set set 7 pieces in a metal box

Specially hardened set of keys for the disassembly and assembly of most normal oil drain plugs.
Adapter 1/2" .. drive for the acceptance of the inserts p/n 612 21 00
Insert size 1 8 mm x 3/8" hexagon p/n 612 20 10
Insert size 2 10 mm x 11 mm hexagon p/n 612 20 20
Insert size 3 12 mm x 13 mm hexagon p/n 612 20 30
Insert size 4 14 mm x 17 mm hexagon p/n 612 20 40
Insert size 5 8 mm x 3/8" square p/n 612 20 50
Insert size 6 19 mm x 17 mm hexagon p/n 612 20 60