Seachoice Shackle Bolts are used to mount a double-eye spring shackle inside a front or rear hanger. They measure 9/16-18 x 3 inches. Includes 2 shackle bolts with nuts. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.