Overview Reviews Product Description 4" pulley with 3/8" bore. Steel, zinc plated for extension springs Part Numbers: 408548.01, 408548, 408548.01 Product Videos Product Reviews Write a Review Write a Review × PULLEY, 4" Review Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments * Recaptcha: