Sprocket wani abu ne mai ƙarfi ko magana wanda ke haɗa sarƙar (nadi) don watsa motsi. Ana amfani da dabaran sprocket mai nau'in cog don haɗa shinge tare da madaidaicin farati akan sarkar hanyar haɗi ko kebul.

Siffar haƙori na sprocket dole ne ta tabbatar da cewa sarkar ta shiga kuma ta fita daga meshing a hankali da makamashi-ceton, yana rage tasiri da damuwa na hanyoyin haɗin sarkar yayin haɗakarwa, kuma yakamata a sauƙaƙe aiwatarwa.

Mahimman sigogi na sprocket sune farar, diamita na abin nadi, adadin hakora da farar jere. Diamita na da'ira, diamita na tip haƙori da diamita da'irar haƙori na sprocket sune manyan ma'auni na sprocket.
Za'a iya yin sprockets tare da ƙananan diamita a cikin yanki ɗaya; sprockets tare da matsakaicin diamita ana yin su a cikin gidan yanar gizo ko faranti mai raɗaɗi; sprockets tare da diamita mafi girma ana yin su a cikin tsarin da aka haɗa, sau da yawa tare da zoben zobe masu maye gurbin da aka kulle zuwa cibiyar.

Gabaɗaya sprocket ɗin ƙarami-diamita ana yin shi ya zama nau'i mai mahimmanci, kuma matsakaicin diamita yawanci ana yin sa ya zama nau'in farantin magana. Don sauƙaƙe sarrafawa, ɗaukar nauyi da rage nauyi, an yi rami a cikin farantin magana, kuma ana iya yin sprocket mai girman diamita zuwa nau'in haɗin gwiwa. Za a iya yin zobe da core wheel na abubuwa daban-daban.

Abubuwan da ke cikin sprocket yakamata su tabbatar da cewa haƙoran gear suna da isasshen ƙarfi da juriya, don haka saman haƙori na sprocket ɗin gabaɗaya zafi ana bi da shi don cimma wani tauri.