Model:

Nitrided Spiral fluted triangular shank 4-12(9 steps

Nitrided spiral flute triangular shank 4-20(9 steps

Nitrided spiral flute triangular shank 4-32(15 steps

Nitriding spiral groove triangular handle 12 ● 20 ● 32opp bag

Nitriding spiral groove triangular handle 12 ● 20 ● 32 cloth bag

Nitrided spiral groove triangular handle 12 ● 20 ● 32 wood box

Nitrided spiral groove triangular handle 12 ● 20 ● 32 aluminum box