Izi ndi“C”mawonekedwe unyolo riveting.The mankhwala ali mitundu iwiri muyezo kukula kwa 15GA ndi 16GA kupezeka kusankha.The msomali m'mimba mwake muli mitundu iwiri specifications 1.6mm ndi 1.8mm.The widest of“C”mawonekedwe ali ndi mitundu iwiri yosiyana makulidwe a 16.9 ndi 23.7, omwe amakwaniritsa zofunikira pakugwiritsa ntchito mitundu yosiyanasiyana yamfuti yamoto.