GripLockTies™ are easy to use, and reuse. Like a regular zip tie you insert the tail into the head and with the Rubber-Lining on the inside and tighten as necessary by pulling the tail. No Expensive Tool Needed. The deep teeth design produces a satisfying click from the extra-tough locking head. If you are not ready to finalize the installation or your forgot "just one more wire" then use the release tab with your thumb, then open the GripLockTies™. After tightening, you can cut off excess strap and the releasable tab so that it's flush with the retention head and now its secured against tampering. You can also trim it a bit longer to keep the Releasable tab in place. Releasable or not it's up to you. You don't have to pull it crazy tight like other ties. GripLockTies™ rubber-lining practically eliminates stress concentration points under tension, making the tie stronger for a longer life and keeping it from slipping around. Ideal for more difficult installations like industrial MRO and OEM situations, including high vibration and stationary production, electrical cabinets, lawn and garden, UTV Moto and ATVs, RV, marine, aircraft, heavy equipment, and trailers. The patented double rubber-lining bands grip and protect the bundle, reducing slippage even when working on on vertical installations. Rounded edges on the top of the tie also protect insulation, preventing sharp edges from damaging cables. Ideally installed in ready-for-use areas where the environment requires heat stabilized and UV protection.