CURT 48661 - SECURELATCH FLUSH-MOUNTSECURELATCH FLUSH MOUNT LUNETTE RING CURT Drop in pin accepts lock to deter theft (turns 90 degrees while coupled) Vertically offset base allows ring to be flipped for maximum height adjustment Rated for 60,000 lbs. gross trailer weight 2 1 2" inside diameter fits pintle hooks, ball & pintle combinations or clevis bars Bolt holes spaced 4 1 2" apart Cast iron construction is austempered for superior strength and wear resistance Textured, dark grey