ITEM NAME:Pair Copper Alloy Positive Negative Battery Terminals Quick Connect Clamps for Description: Material: Copper Alloy Size: Approx.65*50*25mm "+" Hole diameter: 18.2mm "-" Hole diameter: 16.2mm Hole Diameters of Battery Terminal: 15mm, 11.5mm, 6.5mm, 6.5mm Multi-function battery terminals fit for most Car, Truck,Boat, Van. Positive and negative terminals accept connections. Dustproof: Clear housing cover protect terminals from dust. Package Includes: 2 Pieces Battery Terminals Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.Material: Copper Alloy. Size: Approx.65 50 25mm.