Rule 300mm/12" x 28mm Metric Imperial Double Sided Square Ends Toledo 300MESE AB6455 18 TPI UN external threading

18 TPI UN external threading insert

When it comes to dressing up your engine

Application: Chevrolet Small Block Gen I 283-400 C

What you get is the most bass possible without modifying the appearance of your vehicle

Spindle/Thread Size : 3/8"-24

Rule 300mm/12" x 28mm Metric Imperial Double Sided Square Ends Toledo 300MESE AB6455 18 TPI UN external threadingDouble sided with graduations on both upper and lower edges Numerical markings on front side on upper and lower edges and in centre Numerical markings on reverse side in centre only Two square ends Manufactured from stainless steel Length: 12 inch Width: 28mm Thickness: 1. 0mm Graduation front upper edge: 32nds of one inch Graduation front lower edge: 64ths of one inch Graduation back upper edge: 0. 5mm Graduation back lower edge: 1mm 300MESE