I-K72 series i-chuck ezimeleyo enemihlathi emine ithatha i-cylinder emfutshane kunye ne-cone shape ye-cone emfutshane,Imilo yekhowuni emfutshane yesetyhula ingahlulwa ibe ziindidi ezimbini ngokwendlela yokudibanisa nentonga yesixhobo somatshini: Uhlobo A (udityaniswe nesikrufu), Uhlobo C (ikhonkco lokutshixa ibholiti), Uhlobo D (intonga yokutsala, ikhonkco lokutshixa ikhamera).
