Dealing with corroded or weak battery terminals? Upgrade to these sturdy brass connectors from Ampper. Made from solid brass, they're built to resist corrosion better than cheaper metals, which means better conductivity and fewer starting problems. This is a pair - one positive, one negative - and they're the same design, just labeled. They fit standard top-post batteries with the common 19mm (0.75\) tapered positive post and 17mm (0.66\) tapered negative post. Installation is a breeze: just loosen your old clamps, slide these on, and tighten down the bolts - no modifications needed. Great for cars, trucks, RVs, boats, and marine applications. You can also use them for battery extensions, parallel connections, or adding a solid ground. They feel substantial in hand and the brass contact surfaces are clean. Keep your electrical connections solid and your engine happy. A simple, effective upgrade for any DIY mechanic or boat owner.