Qtr-Turn Convertible Retaining Ring Plier 90 Degree Angle .038" Dia. .038" 90 Degree Qtr-Turn Convertible Retaining Ring Pliers. Fixed Tip Convertible Pliers For 1/4" To 3 1/2" Rings. Quickly And Easily Converts From Internal (Rings In A Housing Or Bore) To External Applications (Rings On A Shaft), Low Profile "T-Knob" For Working In Tight Spaces