Twin BNC plugs are available in three assembly styles: solder/clamp, standard crimp, and Bomar's exclusive SATCONN™ (Simplified Assembly Technique Connector) The solder/clamp type requires no special tooling, the standard crimp version requires the use of commercially available specialized tooling. This tooling can be rather expensive. The standard crimp types have vent holes for optional soldering. The Satconn™ type uses Bomar's inexpensive standard crimp tool.