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Ngwakọta PDC-roller API 8.5 inch nke nwere ngwakọ ngwoolu maka ihe siri ike siri ike.
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API factory 17.5 inch PDC na tricone ngwakọ drill bit maka olulu mmanụ miri emi
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9.5 sentimita asatọ Ngwakọta PDC jikọtara ya na ihe na-agbagharị cone maka ịgba mmanụ
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Ngwakọta API 12 1/4 inch maka igwu olulu mmanụ siri ike