Embodiments of the present invention improve upon component level inspection performed by pick and place machines. The present invention further provides a process for manufacturing such a closed structure. The boss includes rails to hold the wear member in place, and a brace at the rear end, which supports the rails on the boss, abuts the rear of the wear member to reduce the loading on the lip, and deflects earthen material away from the wear member under reverse loading. Also provided are pharmaceutical compositions containing compounds of the present invention.