WBT make two types of nextgen™ spades, particularly suitable for larger-gauge cables (up to 10mm squared). The Cu version features gold-plated pure copper surfaces and the Ag version is platinum plated fine silver.
The nextgen™ 0661 are 6mm to fit standard binding posts and are designed to attach to cables without solder.
Copper or Silver
Fits binding post up to 6mm
Pack of four
WBT Spades come with the necessary 'Torx' key for fitting the cables.