There are blades for HCT cutters available for sale. Why there are no changeable blades for HC cutters?

Cutter of HCT-40 and HCT-55 made by KBT are designed for cutting different solid materials so that the user can easily change the blades when necessary. HC cutter is designed so that in 90% when you face a break of blades it means that the ratchet also needs to be changed. This leads to an almost full disassembly of the tool. This specific task should be done by professionals from KBT Service Center.