Combo Pack - KPL Original & KPL HeavyKPL Heavy is a higher viscosity version of the KPL you know and love. KPL Heavy is highly thixotropic shear thinning formula designed specifically for knife detents and detent tracks. Ordinarily gel like, each time your lock mechanism clicks into place, the shock refluidizes KPL Heavy allowing it to refresh the lubrication of your detent ball. When sitting without shock shear, the KPL heavy regains its higher viscosity so it stays put near the detent.