Overview Product Description 195632 New-No Box; Martin 50BS18-1-1/4 Sprocket # 50; 18T; 1-1/4" ID; . Item is New; unused; no factory packaging. Austin Surplus SKU: 195632 Location: GRG-R04-P07-S04-A-0000868 Product Videos Custom Field MPN 50BS18-1-1/4 Product Reviews