Comparison : Item # SFRN075050SP, 3/4 x 1/2 Inch (in) Size Zinc Plated Steel Threaded Reducing Nipple
Item # SFRN100075SP, 1 x 3/4 Inch (in) Size Zinc Plated Steel Threaded Reducing Nipple
Item # SFRN125100SP, 1 1/4 x 1 Inch (in) Size Zinc Plated Steel Threaded Reducing Nipple
Item # SFRN150125SP, 1 1/2 x 1 1/4 Inch (in) Size Zinc Plated Steel Threaded Reducing Nipple
Item # SFRN200150SP, 2 x 1 1/2 Inch (in) Size Zinc Plated Steel Threaded Reducing Nipple