Onye ndu abụọgia ikpuru wiil ikpuru bụ ụdị sistemụ gia eji eme nnyefe ike. O nwere ikpuru, nke bụ ihe dị ka skru nke nwere ezé helical, na wiil ikpuru, nke bụ gia nwere ezé nke na-ejikọta na ikpuru.

Okwu ahụ bụ dual lead na-ezo aka n'eziokwu ahụ bụ na ikpuru nwere ezé abụọ, ma ọ bụ eriri, nke na-agba gburugburu silinda n'akụkụ dị iche iche. Nhazi a na-enye oke gia dị elu ma e jiri ya tụnyere otu ikpuru lead, nke pụtara na wiil ikpuru ga-agbagharị ugboro ole ọ bụla ikpuru ahụ na-agbagharị.

Uru dị n'iji wiil worm dual lead na worm bụ na ọ nwere ike iru oke gia buru ibu na nhazi dị obere, na-eme ka ọ baa uru n'ọrụ ebe oghere dị oke. Ọ na-akpọchikwa onwe ya, nke pụtara na ikpuru nwere ike ijide wiil worm n'ọnọdụ ya na-enweghị mkpa maka brek ma ọ bụ usoro mkpọchi ọzọ.

A na-ejikarị sistemụ wiil ndu abụọ na wiil ikpuru eme ihe n'ime igwe na akụrụngwa dịka sistemụ mbugharị, ngwa ibuli elu, na ngwaọrụ igwe.