Pini yosalala ya cylindrical, yomwe imadziwikanso kuti pini ya kasupe, ndi mzati wopanda mutu wokhala ndi axial slot ndi chamfer kumapeto onse awiri, omwe amagwiritsidwa ntchito poyika, kulumikiza ndi kukonza pakati pa magawo.Ndikofunikira kukhala ndi kukhazikika kwabwino komanso kukana kukameta ubweya, ndipo m'mimba mwake akunja amtundu uwu wa pini ndi wokulirapo pang'ono kuposa kabowo ka msonkhano.