Package includes 20 wheel nut caps in silver with 1 black nut cover removal tool. Wheel nut caps are made of premium nylon material, hard to break, protect wheel screws. Outer diameter is about 21.5mm, overall height is about 17.8mm, inner diameter is about 17mm. Easy to install : Simply press the nut cover directly onto the screws when you use it. Fits most cars 17mm hex nuts and bolts, protects them from corrosion.Package Content 20 silver wheel nut caps with 1 black nut cover removal tool. Wheel nut caps are made of premium nylon material, not easy to break, protect the wheel bolts. Outer diameter is about 21.5mm, overall height is about 17.8mm, inner diameter is about about 17mm.Easy to install: just press the nut cover directly onto the screws when using it.Fits most car 17mm hex nuts and bolts, protects them from corrosion.< /p>