The amburera musoro kudhonza stud anotaurwa ari bofu rivet idenderedzwa musoro kudhonza stud kana countersunk musoro kudhonza stud?

Umbrella head pull studs anonziwo round head pull studs and pan head pull studs.The brim of countersunk head pull stud iri pasi, uye yeround head pull stud iri kumusoro.

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