Posi-Lock Blade Fuseholder In Line Fuseholders 618 Posi-Lock Blade Fuseholder 2 pc re-usable Posi-Fuse connectors The blade-type fuse holder incorporates the Posi-Lock no crimp technology with universal fuse coverage. This unique fuse holder features ATC, ATO and Mini Fuse capacities. Both models accept 2.0mm2 - 5.0mm2 standard wires and feature Nylon 66 housings.