acid, petrol, heat and oil resistant made of NBR, not suitable for drinking water includes the following tools: 20 O-rings Ø 3 mm, thickness 1.5 mm 20 O-rings Ø 4.5 mm, thickness 2 mm 18 O-rings Ø 5 mm, thickness 2 mm 23 O-rings Ø 7 mm, thickness 1.5 mm 23 O-rings Ø 10 mm, thickness 1.5 mm 23 O-rings Ø 13 mm, thickness 1.5 mm 14 O-rings Ø 10 mm, thickness 2.5 mm 13 O-rings Ø 11 mm, thickness 2.5 mm 14 O-rings Ø 13 mm, thickness 2.5 mm 13 O-rings Ø 14 mm, thickness 2.5 mm 14 O-rings Ø 16 mm, thickness 2.5 mm 14 O-rings Ø 18 mm, thickness 2.5 mm 13 O-rings Ø 19 mm, thickness 2.5 mm 14 O-rings Ø 21 mm, thickness 2.5 mm 13 O-rings Ø 22 mm, thickness 2.5 mm 10 O-rings Ø 18 mm, thickness 3.5 mm 10 O-rings Ø 20 mm, thickness 3.5 mm 10 O-rings Ø 22 mm, thickness 3.5 mm 10 O-rings Ø 23.5 mm, thickness 3.5 mm 10 O-rings Ø 25 mm, thickness 3.5 mm 10 O-rings Ø 26.5 mm, thickness 3.5 mm 10 O-rings Ø 28 mm, thickness 3.5 mm 10 O-rings Ø 30 mm, thickness 3.5 mm 10 O-rings Ø 31 mm, thickness 3.5 mm 10 O-rings Ø 33 mm, thickness 3.5 mm 10 O-rings Ø 34.5 mm, thickness 3.5 mm 10 O-rings Ø 36 mm, thickness 3.5 mm 10 O-rings Ø 38 mm, thickness 3.5 mm 10 O-rings Ø 41 mm, thickness 3.5 mm 10 O-rings Ø 44 mm, thickness 3.5 mm 10 O-rings Ø 47 mm, thickness 3.5 mm 10 O-rings Ø 50 mm, thickness 3.5 mm