Emepụtara mgbanaka ime ụlọ nke helical site na nka skiving ike, Maka obere modul ime mgbanaka mgbanaka anyị na-atụkarị aro ka ịme skiing ike kama ịnya igwe na-egweri, ebe ọ bụ na skiing ike kwụsiri ike ma nweekwa arụmọrụ dị elu, ọ na-ewe nkeji 2-3. Otu gia, izi ezi nwere ike ịbụ ISO5-6 tupu ọgwụgwọ okpomọkụ na ISO6 mgbe ọgwụgwọ okpomọkụ gasịrị.
Modul bụ 0.8 , ezé :108
Ihe onwunwe: 42CrMo gbakwunyere QT,
Ọgwụgwọ okpomọkụ: Nitriding
ziri ezi: DIN6