9-Pack Set 2 Boring Head R8 Shank 1/2 Carbide Boring Bar Set Replacement for

  
2 Boring Head R8 Shank. 2 Boring Head with R8 Shank; Head size: 2 ; Boring Bar Hole: 1/2 ; Cross Hole Dia: 1/2 ; Maximum Offset: 5/8. 1 x 2 Boring Head.

When the direction of the dial is reversed, the backlash between the gear train is listed below.