Quick Lock D-Sub Plastic Hoods - Provertha The Provertha Quick Lock range of D-Sub plastic hoods offers a Push_Pull locking system for easy, fast, blind-mating and secure connection of D-Sub cable connectors to D-Sub device interfaces. The 103 series of Quick Lock hoods have 2 cable inputs and the 104 series has 3 cable inputs. These Quick Lock hoods are suitable for use with crimp flanges, internal and external cable clamps.