This all in one assembly with an insulated body that provides 1.7x the insulation of previous models of wire strainers can strain and connect fence wires. The integrated joint clamp allows direct attachment of wires and power connection. The 12 tooth spool design is an easy set up for fine adjustment, easy tightening action, and easy wire alignment. This insulated end strainer has a streamlined, ergonomic design for a comfortable use. It is suitable for up to 4mm gauge fence wire. With improved corrosion resistance and an insulated body this strainer provides added protection from corrosion and is 1.4x's stronger than previous models, and it comes backed by a full 10-year manufacturer's warranty.