National Hardware Steel Threaded Rods Coarse Thread 1/2"-13 x 72" Peerless you can pick the one

you can pick the one that best suits you

The high performance blades feature bi-metal technology that delivers up to 4 times longer life than standard blades

Tri-Metal Shock Resistant Brazing

Rectangular

Internal metal stays provide lower back support

National Hardware Steel Threaded Rods Coarse Thread 1/2"-13 x 72" Peerless you can pick the oneNational Hardware's 1 2" 13 x 72" Steel Threaded Rod is designed for hanging, connecting, clamping, and supporting in plumbing, heating and electrical applications and other do it yourself projects. Consists of UNC coarse threads Can be drilled, cut, heated, or shaped For interior applications Safe working load of 3,100 lbs Meets ASTM A307 Grade A