The instructions for the Mercedes exhaust recommend aligning the exhaust system by propping it up on jack stands and precisely shimming with wood roofing shingles. Now, the car is already supported by four jack stands, so that means I would need another 3 jack stands? Not possible. And wood shingles haven't been sold in Los Angeles for a decade. So I made these clever little stands. A pair gently cradling a third. So enamoured with these stands, I am going to build some tall bases and additional top extensions with different saddles. Maybe even a roller top.