Part Number RUB-TUBE-3 8-ID 3 32W Late in stock with ready to ship. Get an instant quote for Twin Commander Acft part number RUB-TUBE-3 8-ID by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for RUB-TUBE-3 8-ID. Our dedicated account manager will get back to you within 15 minutes.