20pcs 21mm Universal Purple Silicone Car Wheel Nut Lug Hub Screw Rim Bolt Covers Dust Protection Caps Description: Prevent the screws from rusting. Protect your bolt heads from corrosion. Environmentally protection silicone material high temperature resistant and uneasy to be distorted. Durable softness and toughness not affected by climate. Decorate car appearances make your car particular and unique. Easy to install just press the nut covers straight to the bolts. Fit for any car wheel 21mm bolts or nuts. The product does not suitable for round anti-theft screws. Specification: Color: Purple Material: Silicone Temperature Range: -25℃ to 300℃ Size: 28.8x25.8x20.8mm / 1.13 x1.02 x0.82 (L*W*H) Instructions: Clean up the screw area of auto wheel hub with a towel before installation. Put the screw cap on the wheel hub screw to complete the installation. Package Includes: 20 x Wheel Hub Screw Cover