Danchuk Back Body to Bumper Seals protect your car from dirt and dust. Without them, dirt will come up from underneath your bumper onto your trunk and rear window. These long lasting and easy to install seals are reproduced with the correct cross-section and length. Use with Danchuk #564 Dust Shields. Danchuk #551 will work on any 1957 Chevy model. Made in the USA.