They are perfect for my needs. I used them to hold together the two halves of a homemade router table. For those who claim that they are easy to unlock, they must be properly installed first. For those interested, these are the measurements for a proper installation. The distance between the centerline of the hook bolt and the centerline of the top latch mounting hole should be 1-1/2 inches. The distance between the "latch" mounting holes is 1 inch. Using these measurements will ensure the latch has the correct tension to stay latched. Remember that these measurements must be accurate.