This 2" plastic triangle - with a 6.0 mm outside diameter - provides a durbale connection point to any anchor trolley system. Whether you are replacing an old part or rigging your own version of a "Do It Yourself" Anchor Trolley, these Anchor Trolley Triangles have you covered. This is the Yak Gear part included in the Yak Gear Deluxe Anchor Trolley System and the Yak Gear Pad Eye Anchor Trolley System.