Solid Copper Spades (Set of 4) = $20

• 100% Pure Oxygen Free Copper
• Excellent sounding
• Width: .525"
• Fits onto both standard 1/4" (6mm) and larger 5/16" (8mm) binding posts
• Includes red and black shrink-tubing
• Crimpable
• Standard size fits up to one #12 gauge wire
• Heavy Duty size fits two #12 gauge wires or up to one #7 gauge wire