Rennsteig is the number one hand tool brand in the solar business. Their top of the line tools can help you streamline your solar installs and give you consistently excellent results.Locator:The Locator holds the terminal in the tool so that you don"t need 3 hands to make a crimp. But it also does more. It positions the terminal so you always crimp it in the right place, for high-quality connection every time.For male and female contactsMC4 is a Trademark of Multi-Contact AG Rennsteig´s complete Locator for MC4 (Multi-Contact Solarline 2) solar contacts is the best addition for our customers who already own our Solar System Tool or our Crimp Kits / Sets.