Contol Rod Compatible Bolt Hole Diameter 1 1/4 in End Type Chisel Point Material Stainless Steel Material Grade/Class 316L Overall Length 18 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 Single Bulb Control Unit Type Control Rod For Pipe Size 12 in Includes Nuts Yes