The seller ordered me a replacement that arrived next day. The brand name is "SSM".
Looking at the listing now and here's what is written:
NEW AND IMPROVED!! - We have just released our NEW IMPROVED Heavy Duty 1" Longer Sway Bar End Link Kit. This kit now features a 3/4" powder coated solid steel hex bar center section. Larger, correct size, Energy Suspension HYPER-FLEX ™ Performance Polyurethane sway bar end link bushings. These larger bushings are the correct size for the HD sway bar, they are not a universal one size fits all bushing. Bushings are made from a firm polyurethane and provide more overall mass and surface area than a smaller universal bushing. Then we top them off with Grade 8 zinc plated hardware. This unit is far superior than the factory part and will work on a leveled or bone stock truck. End Link Set does both sides. MADE IN THE USA!!!
I'm going to compare side x side and give this set a try.