This O-ring set consists of 18 of the most used O-ring sizes to accommodate a variety of tasks. The nitrile rings resist heat, most petroleum and silicone fluids, and solvents. The O-rings come organized in a convenient storage case with a sizing guide for easy size identification. A great O-ring set for car mechanics and machinists.18 of the most used O-ring sizes in one organized PVC casenitrile rings resist heat, most petroleum and silicone fluids, hydraulic and non-aromatic fluids, and solventsmetric sizes !tehnički podaci:-3 x 1 mm (F0391X): 10 pcs4 x 1 mm (F0443X): 10 pcs4.8 x 1.9 mm (P5): 20 pcs5.8 x 1.9 mm (P6): 20 pcs6.8 x 1.9 mm (P7): 20 pcs7.8 x 1.9 mm (P8): 20 pcs8.8 x 1.9 mm (P8): 15 pcs9.8 x 2.4 mm (P10): 15 pcs10.8 x 2.4 mm (P11): 15 pcs11.8 x 2.4 mm (P12): 10 pcs13.8 x 2.4 mm (P14): 10 pcs15.8 x 2.4 mm (P16): 10 pcs5 x 2 mm (F0452X): 10 pcs8 x 2 mm (F0106X): 10 pcs20 x 3 mm (G20): 10 pcs22 x 3 mm (G22): 10 pcs20 x 4 mm (F0393X): 5 pcs22 x 4 mm (F0395X): 5 pcs