Specify rod length from the inside of the hook inside of the bend.
Specify length of the return of the J-Hook measured from the i.d. of the J-Hook.
Specify the i.d. length of the bend.
IMPORTANT! To prevent cracking or stress on the steel the inside diameter of the J-Hook should be a minimum of twice the thickness of the material. EXAMPLE: 1/4" diameter rods should have a minimum of 1/2" i.d. opening.