SAE Set Includes a small rethreading tool with 1/2" to 5 3/4" diameter capacity for bolt threads and 1/4" to 4" capacity for pipe threads plus nine chasers; TR20-10 (4-5 P) TR20-11(6-7 P) TR20-12(8-9 P) TR20-13(10-11 P) TR20-14(11-1/2-12 P) TR20-15(13-14 P) TR20-16(16-18 P) TR20-17(20-24 P) TR20-32(8-10 P)

Includes a knurled handle internal thread chasing tool plus nine chasers; TR20-10 (4-5 P) TR20-11(6-7P) TR20-12(8-9P) TR20-13(10-11P) TR20-14(11-1/2-12P) TR20-15(13-14P) TR20-16(16-18P) TR20-17(20-24P) TR20-32(8-10P)

Metric Set Includes a small rethreading tool with 1/2" to 5 3/4" diameter capacity for bolt threads and 1/4" to 4" capacity for pipe threads. Includes six chasers; TR20-25(4.5-5MM) TR20-26(3.5-4MM) TR20-27(2.5-3MM) TR20-28(1.75-2MM) TR20-29(1.25-1MM) TR20-30(.75-1MM)

Includes a knurled handle internal thread chasing tool plus  six chasers; Includes six chasers;   TR20-25(4.5-5MM) TR20-26(3.5-4MM) TR20-27(2.5-3MM) TR20-28(1.75-2MM) TR20-29(1.25-1MM) TR20-30(.75-1MM)

SAE Set Includes a large rethreading tool with 5" to 14" diameter capacity.  Includes the following chasers: TR20-10 (4-5 P) TR20-11(6-7P) TR20-12(8-9P) TR20-13(10-11P) TR20-14(11-1/2-12P) TR20-15(13-14P) TR20-16(16-18P)        TR20-17(20-24P) TR20-32(8-10P)

Metric Set Includes a large rethreading tool with 5" to 14" diameter capacity. Includes the following chasers;    TR20-25(4.5-5MM) TR20-26(3.5-4MM)              TR20-27(2.5-3MM) TR20-28(1.75-2MM) TR20-29(1.25-1MM) TR20-30(.75-1MM)