Overview Product Description JK Products Chevy Nastruck 4 1/2" - .007 Thick - JKB70A / Formally JK-71172A Product Videos Custom Field Product Reviews Write a Review Write a Review × JK Chevy 4.5" Nastruck .007 - JKB70A / JK-71172A Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *