Lang Tools 87 Heavy Duty Pliers with Tip Kit The safest, most compact, and precisely designed tool available to service extra large retaining rings Compound screw lever for easy ring installation and removal Durable heat treated alloy steel components provide reliability of use Set includes 6 pairs of interchangeable tips and hex key all stored in a handy pouch Internal : 3-1/2" thru 7"/External: 3-1/2" thru 7"