Overview Product Description 202175 New-No Box; Martin 40B30-1-1/4 Sprocket; # 40; 30T; 1-1/4"ID; . Item is New; unused; no factory packaging. Austin Surplus SKU: 202175 Location: 165507-GRG-R10-P10-S04-D-0000809 Product Videos Custom Field MPN 40B30-1-1/4 Product Reviews