Item:Headed Press-Fit Drill Bushing (H); Drill Bushing Wall Type:Standard Wall; Head Type:Yes; Measurement System:Wire; Inside Dia.:#29; Decimal Equivalent:0.1360; Drill Size:#29; Inside Dia. Tolerance:+0.0001 In /+0.0004 In; Outside Dia.:1/4 In; Outside Dia. Tolerance:+0.0016 In /+0.0013 In; Bushing Code:H; Bushing Head Type:Headed; Overall Length:3/4 In; Head Dia.:23/64 In; Head Material:High Speed Steel; Heat Treatment:Through Hardened; Material - Machining:High Speed Steel; Rockwell Hardness:Rc 62-64;