Topeakmart Pro Mechanic Bike Repair Rack Adjustable Bicycle Work Stand Good quality clamps hold tight but won't damage your bike's finish. Telescoping stand adjusts from 52-74.8 inch. Pipe Dia.:1.6"(outer),tray Bar:9"x 6"(L&W). Work Horse clamps fit nearly all standard frames from 1" to 1.8". Clamps rotate 360 degrees for easy access to every part of your bike.