Injin ɗinkin da'ira mai gefe biyu injinan jersey guda ɗaya ne masu 'kira' wanda ke ɗauke da ƙarin allurai da aka sanya a kwance kusa da allurar silinda a tsaye. Wannan ƙarin allurai yana ba da damar samar da yadudduka waɗanda suka ninka kauri sau biyu fiye da yadudduka masu zagaye. Misalan da aka saba amfani da su sun haɗa da tsarin da aka gina a tsakanin makulli don tufafin ciki/ƙafafun tushe da kuma yadudduka masu kauri 1 × 1 don leggings da kayayyakin kayan waje. Ana iya amfani da zare masu kyau sosai, domin zare ɗaya ba ya haifar da matsala ga masaka masu zagaye biyu na Injin ɗinkin da aka saka.
Zaren da aka yi wa allurar don samar da yadi dole ne a kai shi ta hanyar da aka riga aka tsara daga spool zuwa yankin saka. Motsin da ke kan wannan hanyar suna jagorantar zaren (jagororin zare), suna daidaita matsin zaren (na'urorin daidaita zaren), sannan a duba ko za a iya samun karyewar zaren a Injin Saka Zane Mai Zane Biyu.
Sigar fasaha tana da mahimmanci wajen rarraba Injin Saka Zagaye Mai Zagaye Biyu. Ma'aunin shine tazara tsakanin allurai, kuma yana nufin adadin allurai a kowace inci. Wannan ma'aunin an nuna shi da babban jimla E.
Injin ɗin ɗinki mai zagaye biyu wanda yanzu haka ake samu daga masana'antun daban-daban ana bayar da shi a cikin girman ma'auni daban-daban. Tsarin ma'auni mai yawa yana biyan duk buƙatun saka. Babu shakka, samfuran da aka fi sani sune waɗanda ke da girman ma'auni na tsakiya.
Wannan siga tana bayyana girman wurin aiki. A Injin Saka Zagaye Mai Zagaye Biyu, faɗin shine tsawon aikin gadaje kamar yadda aka auna daga ramin farko zuwa na ƙarshe, kuma yawanci ana bayyana shi da santimita. A kan injinan zagaye, faɗin shine diamita na gado da aka auna da inci. Ana auna diamita akan allurai biyu masu gaba da juna. Injinan zagaye masu girma na iya samun faɗin inci 60; duk da haka, faɗin da aka fi sani shine inci 30. Injinan zagaye masu matsakaicin diamita suna da faɗin kusan inci 15, kuma ƙananan samfuran diamita suna da faɗin inci 3.
A fannin fasahar saka, tsarin asali shine saitin kayan aikin injiniya waɗanda ke motsa allurai kuma suna ba da damar samar da madauki. Yawan fitarwa na injin yana ƙayyade ta hanyar adadin tsarin da ya haɗa, saboda kowane tsari yana daidai da motsi na ɗagawa ko ragewa na allurai, saboda haka, zuwa ga samuwar hanya.
Injin ɗin ɗinka mai zagaye biyu yana juyawa a hanya ɗaya, kuma ana rarraba tsarin daban-daban a kewayen gadon. Ta hanyar ƙara diamita na na'urar, yana yiwuwa a ƙara adadin tsarin da kuma adadin darussa da aka saka a kowane juyi.
A yau, ana samun injunan zagaye masu girman diamita da yawa tare da adadin diamita da tsarin a kowace inci. Misali, gine-gine masu sauƙi kamar dinkin jersey na iya samun tsarin har zuwa 180.
Ana cire zaren daga kan abin da aka shirya a kan wani mariƙin musamman, wanda ake kira creel (idan an sanya shi kusa da Injin Saka Zane Mai Zane Biyu), ko kuma wani rack (idan an sanya shi a sama). Sannan zaren zai shiga yankin saka ta hanyar jagorar zaren, wanda yawanci ƙaramin faranti ne mai ƙyalli na ƙarfe don riƙe zaren. Domin samun takamaiman ƙira kamar intarsia da tasirin, injinan suna da jagororin zare na musamman.