SAVE TIME AND FRUSTRATION USING THE LATEST INNOVATION FROM GARDNER BENDER; THE SELF-CUTTING CABLE TIE. EASY TO USE; SIMPLY LOCK AND TWIST TO FINISH THE JOB WITH NO NEED FOR AN ADDITIONAL CUTTING TOOL UNLIKE OTHER ""TWIST"" TIES OUR PATENTED DESIGN DOESN'T REQUIRE A REDUCTION IN THE STRENGTH AND DURABILITY OF THE CABLE TIE MATERIAL OR MULTIPLE ROTATIONS TO ACHIEVE A BREAK IN THE TIE. INSTEAD A SMALL CUTTING BLADE DESIGNED INTO THE HEAD OF EACH TIE ENSURES A TIGHT LOCK AND QUICK CLEAN IMPROVING THE APPEARANCE OF THE END RESULT AND VIRTUALLY ELIMINATING RESIDULE JAGGED EDGES WHICH CAN BITE INTO BARE SKIN. TIES ARE MADE FROM DURABLE 6/6 NYLON AND PROVIDE 50 POUNDS OF TENSILE STRENGTH.