API Elastomer E Tiisitsoeng e nang le tricone bit IADC517,IADC527,IADC537 e loketse moreki oa oli ea USA.

Ho Drilling Bochabela bo Holimo leka bokhabane, k'hamphani ea bareki", e ts'epa ho ba basebetsi ba tšebelisano-'moho le ba laolang basebetsi, barekisi le bareki, ba hlokomela karolo ea boleng le papatso e tsitsitseng bakeng sa botumo bo phahameng ba Oilwell Drilling Rotary Bit 7 7/8 IADC517,IADC527, IADC537 Hard Rock Tricone Bit for Oilwell with Elastomer Sealed Bearing, lihlahisoa tsohle li hlaha ka boleng bo holimo le litharollo tse nepahetseng ka mor'a thekiso tse shebaneng le 'maraka le tse shebaneng le bareki ke tsona tseo esale re li latela.