Item:Liner Drill Bushing (L); Drill Bushing Wall Type:Thin Wall; Measurement System:Fractional Inch; Inside Dia.:3/16 In; Decimal Equivalent:0.1875; Drill Size:3/16 In; Inside Dia. Tolerance:+0.0001 In /+0.0005 In; Outside Dia.:5/16 In; Outside Dia. Tolerance:+0.0016 In /+0.0013 In; Bushing Code:L; Bushing Head Type:Headless; Overall Length:5/8 In; Head Material:High Speed Steel; Heat Treatment:Through Hardened; Material - Machining:High Speed Steel; Rockwell Hardness:Rc 62-64;