You are bidding on  a Brown and Sharpe 2 piece set of best test accessories. They are both new, never used, not in box. The # 7047 bar measurements are  1/4 by 1/2 inch rectangular bar with .220 stud that fits in the 7/32 hole of the #7045 swivel clamp. the other hole is 3/8 diameter. Both pieces are brand new, no initials, or marks of any kind and FREE SHIPPING!!!   Thanks for looking and e-mail me with any questions you have.