Ama-Expansion Bolt ayizixhumanisi ezikhethekile ezinentambo ezisetshenziselwa ukubophela izisekelo zamapayipi, iziphanyeko, izisekelo, noma okokusebenza ezindongeni, phansi, nasezinsikeni.
Ibhawodi yokunweba ihlanganisa ibhawodi lekhanda elishona phansi, ipayipi lokunweba, iwasha eliyisicaba, i-spring gasket kanye ne-hexagon nut.
Lapho isetshenziswa, i-drill yomthelela (isando) isetshenziselwa ukubhoboza imbobo yobukhulu obuhambisanayo emzimbeni ongaguquki, bese kufakwa ibhawodi kanye nepayipi lokunweba emgodini.