Straightpoint® 150 T Compound Plus CP150T Oblong Master Links SS Versatile Accessories: We carry a Versatile Accessories: We carry a wide range of L track compatible fittings (both single and double stud) and straps so it's easy to create the tie down system you need Self locking hooks have a locking mechanism that is much more durable than the standard stamped latches as they allow the use of a separate internal sealed enclosure that provides the load cell's electronic components with IP67 or NEMA6 environmental protection This particular model (Straightpoint part #CP150T and Crosby part #2789017) is a 150 ton rated tension load cell that's constructed from high quality hard anodized aerospace grade aluminum