Ngwakọta zuru oke n'etiti ọdịnala kichin Japanese na isi nri ụlọ ọgbara ọhụrụ. Emepụtara ya na akwa akwa atọ dị nkọ Japanese igwe anaghị agba nchara yana 9CR18MOV Japanese steel core na HRC 58-60 siri ike maka ike pụrụ iche na ogologo ndụ. Oghere bevel nke nwere ụdị V nke ejiri aka mee na-enye ahụmịhe ịkpụ dị nro ma dịkwa nkọ. Nchara a nwere 0.6-0.75% carbon nke na-eme ka ọ sie ike okpukpu abụọ ka mma ndị ọzọ na klaasị ya n'ihi na ha nwere ihe dịka 0.3% carbon.
Maka akụkụ aka mara mma, ergonomic haziri ebony jikọtara ya na aka ebony octagon ọbara na-eme ka njide ahụ dịkwuo mma na mgbochi. Elu nke mma kichin pro nwere ụkpụrụ concave-convex nke na-eme ka mma ịkpụ ahụ dịkwuo nro, wee bụrụ nhọrọ kacha mma ugbu a maka onye isi nri ma ọ bụ nwunye. Akụkụ nke ọ bụla na-agbada ogo ogo 15-18 nke na-ewepụta ịdị nkọ ya na nguzozi zuru oke. Mma ọkachamara a na-eji n'ọbọ na igbe onyinye mara mma na-abịa.
Raara onwe ya nye iji nyere ndị ahịa aka idozi nsogbu ha kacha sie ike na nsogbu teknụzụ.
Biko dejupụta fọm dị n'okpuru ebe a, ndị otu ahịa anyị ga-akpọtụrụ gị n'oge na-adịghị anya.
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