Qualcraft 2601 Wall Jack, Red Heavy-duty wall jack; OSHA compliant; up to 1,000 pound capacity per wall jack Positive spring-loaded cam lock; Designed for use with 1-1/2 by 3-1/2-inch (2 x 4) fir poles Constructed of heavy-duty, malleable cast iron Includes 1 wall jack; 2 x 4 lumber not included 17 pounds; lifetime warranty