Wall jacks (2 units) sold and priced as a pair – RDSI
Amazon.com: Qualcraft 2601 Portable Wall Jack, for Use with 1-1/2 X 3-1/2 in Fir Poles Or 1 in Od Steel Pipe, Malleable Iron, Red : Industrial & Scientific
Wall-Framing Tools I Love: QualCraft Wall Jacks - Fine Homebuilding