Wani bututun conlow lallai hakika an shigar da shi a tsakanin tsawon bututun mai amfani da shi a tsakanin tsawon bututu ko kuma bututu don canza hanyar da guduwa. Canjin da ke cikin jagorar an gama shi gaba ɗaya a cikin 45 ° ko 90 ° Hanyar.
SW (Soket Weld) gwiwar hannu mai ƙarfi shine mafi yawan matsin lamba wanda zai iya amfani da shi a cikin masana'antar juriya da aka yanka saboda kyakkyawan lalata juriya.