DBT30S-7.62-4P DBT30S-7.62-3P DBT30S-7.62-2P DBT30R-9.5-6P DBT30R-9.5-5P DBT30R-9.5-4P DBT30R-9.5-3P DBT30R-9.5-2P DBT30R-8.25-8P DBT30R-7.62-8P