Overview Reviews Product Description Mar-Bal 1603-2A Red Standoff Insulator 3/8-16 x 3/8 Deep Height 1-3/8 600V Shape- Round Diameter- 1-3/4 Aluminum Insert 16032A-UA1-YAG. Product Videos Custom Field Product Reviews Write a Review Write a Review × Mar-Bal Mar-Bal 1603-2A Red Standoff Insulator 3/8-16 x 3/8 Deep Height 1-3/8 600V Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *