For rearing walls, beams, or to fasten and rightful flooring; Easy to habituate; Economical and convenient; Constructed of sonorous tariff malleable iron out castings; Designed on the side of habituate in contrast with 1-1/2" x 3-1/2" (2x4) true fir poles; Capacity: When used in alignment immediately after poles made of open square grained true fir natalie wood, loose from altogether knots or defects, the wall jack has a content of 1000 lbs.