Steel grade:

AISI 4145 H modified alloy steel, full length heat treated, with chemical analysis and mechanical properties which conform to the requirements of API Spec 7 (latest edition)

Types:

Hexagonal and Square API Kellys 

Sizes:

• 3" – 6” Hexagonal Kellys up to 54 ft. Overall Length
• 2 1/2" – 5 1/4” Square Kellys up to 54 ft. Overall Length