Hatimin zafin jiki mai zafi yana ba da damar waɗannan maɓuɓɓugan iskar gas don jure zafi har zuwa 392 ° F. Suna da ƙwallon ƙwallon ƙwallon ƙwallon ƙwallon ƙwallon ƙwallon ƙafa a kowane ƙarshen don hawa. Ƙarshen kayan aikin ƙwallon ƙwallon ƙwallon suna juyawa ta kowace hanya akan ingarmar ƙwallon don rama rashin daidaituwa.
Babban zafin jiki na iskar gas yana da kewayon zafin jiki mafi girma tare da hatimi na musamman. 10mm ball da soket haši ne daidaitattun, amma cirewa, barin M8 zaren a bangarorin biyu. Ceram pro-magani sanda tare da foda mai rufi gama.