Contol Rod Compatible Bolt Hole Diameter 1 1/4 in End Type Chisel Point Finish Zinc-Plated Material Steel Material Grade/Class Not Applicable Overall Length 23 in Restricted Motion Direction Expansion Thread Direction Right Hand Thread Fit Not Applicable Thread Size 1 1/8 In.-7 Thread Type UNC Compatible Joint Type Double Bulb Control Unit Type Control Rod For Pipe Size 12 in Includes Nuts Yes