Dierks Anchor Parts › Dierks Jam Cleat JC4 Image 1 of 1 Dierks Jam Cleat JC4 $19.95 Dierks Jam Cleat for Anchor Arm or Remote Bracket. Length is 4 7/8”, width is 1 5/8”, holes are 3 3/4” on center.JC4 Quantity: Add To Cart Added! Dierks Jam Cleat for Anchor Arm or Remote Bracket. Length is 4 7/8”, width is 1 5/8”, holes are 3 3/4” on center.JC4