Icyitegererezo cyicyitegererezo cyumubare: ZL201820284980.6

Isahani yo hepfo ni laser yaciwe kandi ifite ishusho, igihuru cyakozwe neza, kandi icyuma kirasudira neza kandi gisizwe. Nyuma yo gusudira birangiye, uruziga rwimbere ninyuma rwakozwe neza kugirango ubunini burusheho gukorwa; ya plaque ya 16mm, kandi icyuma gikozwe muri φ14mm kizengurutse ibyuma, bigatuma imiterere ikomera.