Gushyira mu bikorwa ubwoko butandukanye bwimpumyi mubihe bitandukanye ：

Head Umutwe uzengurutswe n'umutwe ukoreshwa cyane cyane mu kuzunguruka hamwe n'umutwaro munini uhinduranya, kandi urakoreshwa cyane.

● Imirongo ihanamye ya taper ikoreshwa cyane mubwato, ikigega cyamazi hamwe nibindi bihe byangirika kubera umutwe munini hamwe no kurwanya ruswa.

Head Umutwe wa Countersunk hamwe na 1200 ya konte yumutwe ikoreshwa cyane cyane mugihe cyo kuzunguruka aho ubuso bugomba kuba bworoshye kandi umutwaro ntabwo ari munini.

Head Semi Countersunk umutwe hamwe na 1200 igice cya kabiri cyumutwe wa rivets ikoreshwa cyane cyane mugihe cyo kuzunguruka aho ubuso bugomba kuba bworoshye kandi umutwaro ntabwo ari munini.

Head Umutwe urambuye ukoreshwa mukuzunguruka hamwe n'umutwaro rusange.