Comparison : Item # SFGJ050, 1/2 Inch (in) Size Plated Iron Ground Joint
Item # SFGJ075, 3/4 Inch (in) Size Plated Iron Ground Joint
Item # SFGJ100, 1 Inch (in) Size Plated Iron Ground Joint
Item # SFGJ125, 1 1/4 Inch (in) Size Plated Iron Ground Joint
Item # SFGJ150, 1 1/2 Inch (in) Size Plated Iron Ground Joint