The 900-2 "Yellow Jackets" premium quality "B" connectors from Elk are manufactured from the finest materials. They feature insulation piercing internal teeth, soft brass (easy to squeeze) crimp, a durable protective outer covering. These wire splices have been used in the telecommunications industry for many years. They provide a solid dependable splice in wires ranging from 22 to 26 gauge. 900-2 package contains 2 zip lock bags of 250 connectors together with a reusable poly storage box.