9/16" x 12 tpi (SAE coarse pitch). Imperial UNC re-threading / thread cleaning repair tap.
5/16" x 18 tpi SAE Imperial UNC coarse re-threading thread repair cleaning tap
1/4" x 20 tpi SAE Imperial UNC coarse re-threading thread repair cleaning tap
3/8" x 16 tpi SAE Imperial UNC coarse re-threading thread repair cleaning tap
1/2" x 13 tpi SAE Imperial UNC coarse re-threading thread repair cleaning tap
7/16" x 14 tpi SAE Imperial UNC coarse re-threading thread repair cleaning tap
6x SAE Imperial UNC coarse re-threading thread repair tap set size 1/4" to 9/16"