Quantum's IRONMAN Offset posts are 14 gauge 1-1/4" x 1-29/32" punched on 1" centers and can be used with shelf clips or nut and bolts. Angle posts are 14 gauge, 1-1/4" x 1-1/4" punched on 1" centers and can be used with nuts and bolts. Beaded posts are 14 gauge, 1-29/32" x 1-29/32" punched on 1" centers and can be used with shelf clips or nut and bolts. Beaded posts are used for continuous runs of shelving.