Overview Product Description 239083 New-No Box; Imao BIS516 Idler Sprocket; Polymer; #50; 16 Tooth; 9/16"ID; . Item is New; unused; no factory packaging. Austin Surplus SKU: 239083 Location: GRG-R01-P06-S04-H-0004988 Product Videos Custom Field MPN BIS516 Product Reviews