Izici:
I-Spring Mechanism, ukusika okusheshayo nokuphephile
Umklamo wasentwasahlobo uvimbela ukuchotshozwa kwamashubhu athambile.
Yenziwe ngezinsimbi zensimbi ezingagugi iqinisekisa ukusetshenziswa okuhlala isikhathi eside nokuqina
Ama-roller kanye ne-blade zisebenzisa ama-ball bearings ukwenza isenzo esibushelelezi.
Isistimu yokulandelela i-roller ezinzile igcina ishubhu ukuthi lingacucu
I-blade eyengeziwe iza nethuluzi futhi igcinwe ku-knob