Two sizes on one tool. For joining two pieces of copper pipe of equal diameter together without using fittings. The resulting capillary joint can be soft or hard soldered. The loose socket former allows easier withdrawal of tool after use. Pipe OD mm 15 & 22 Wall mm 0.7 & 0.9. Display Packed. Read product review from Amazon Customer Reviews. Buy MON138 from Amazon Marketplace. 665240