D. 4 Bumpers

(26) Rubber Bumpers for Trailer Compatible with Ramp Door Truck 2.5 Inches Round

You will find that the rubber layer adds a nice bit of bounce to the product.

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(QTY 8) Red Hound RED150031 Auto Rubber Bumpers for Trailer Ramp Door Truck

The rubber material provides a quiet, non-squeaky operation.

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