THE CONVERTIBLE DESIGN ALLOWS FOR USE ON INTERNAL SNAP RINGS FROM 10MM - 15MM (3/8"" - 5/8"") OR ON EXTERNAL SNAP RINGS FROM 6MM - 25MM (1/4"" - 1""). ADJUST BY LOOSENING THE PIVOT SCREW AND SLIDING THE JAWS TO THE SECOND PIVOT HOLE TO SWITCH FROM SQUEEZING TO SPREADING. THE STRAIGHT TIPS FIT INTO 1MM HOLES IN THE SNAP RING ENDS. MEASURES 150MM LONG OVERALL. PIVOT MEASURES 30MM AT THE WIDEST SPOT. JAWS MEASURE 5.2MM THICK; THICKNESS INCLUDING PIVOT SCREW IS 14MM. BLACK OXIDE FINISH WITH ORANGE PVC-COATED HANDLES.