The Hotline P29a wire tensioner is manufactured from aluminium is is probably the easiest tool for taking up slack and applying a little tension to you wire, polywire or rope fence.
20mm or 40mm Tape Combined Tensioner/Insulator
Aluminium Wire Tensioner
The Hotline P19 In-Line tensioner is manufactured using high grade, durable and long lasting plastic.
Hotline Tension Handle