Comparison : Item # 3/8, 4140 Hot Rolled Annealed Alloy Steel - Rounds
Item # 1/2, 4140 Hot Rolled Annealed Alloy Steel - Rounds
Item # 9/16, 4140 Hot Rolled Annealed Alloy Steel - Rounds
Item # 5/8, 4140 Hot Rolled Annealed Alloy Steel - Rounds
Item # 11/16, 4140 Hot Rolled Annealed Alloy Steel - Rounds