Includes 9 pieces.6M-10-11 double open end wrench 10 mm to 11 mm.6M-12-13 double open end wrench 12 mm to 13 mm.6M-14-15 double open end wrench 14 mm to 15 mm.6M-16-17 double open end wrench 16 mm to 17 mm.6M-18-19 double open end wrench 18 mm to 19 mm.6M-21-23 double open end wrench 21 mm to 23 mm.6M-22-24 double open end wrench 22 mm to 24 mm.6M-6-7 double open end wrench 6 mm to 7 mm.6M-8-9 double open end wrench 8 mm to 9 mm.Foam available with laser marked