Simple and comfortable. Inside diameter (positive): 19 Mm/0.74 Inside diameter (negative): 17 Mm/0.66 Dimensions: 6.9 x 4.7 x 2.8cm / 2.7 x 1.9 x 1.1cm Type: Battery Terminals Quantity: 1 Pair (Red Cover and Cover blue) Product Description Material: Metal + Plastic: One red clamp (positive) and one blue clamp (negative). Designed for premium postal batteries and side batteries with standard postal adapters. Item Dimensions: 6.9 x 4.7 x 2.8cm / 2.7 x 1.9 x 1.1cm. Type: battery terminals. This product used to fix the wires was designed for users who often need to change the battery. Just lift the Heavy Duty Suitable for 4 to 6 gauge wire and rated for 500A continuous current 800A Discharge current at 12V Quantity: 1 pair (red cover and blue cover) Inner diameter (Positive): 19mm - Inner Diameter (Negative): 17mm - Battery quick releases allow battery. Quick removal, charging and recharging and storing your boat or vehicle battery. For battery installations in tight spaces. Quick Release Design: Attaches to battery terminals by battery terminals by lifting the caps down to quickly remove the battery terminals, then insert a new battery that can be securely attached. 1 pair of simple and practical battery terminals only for traditional battery terminals. Quick Release Design - Attach to Battery - Attach clamps and lift off battery terminal caps. One red clamp (positive) and one blue clamp (negative). Material: Metal + Plastic, Heavy Duty Suitable for 4-6 gauge cables and rated for 500 continuous current, 800 to 12 surge. They are only for batteries with conventional round connectors. Inner diameter (positive): 19mm/0.74mm. Inner diameter (negative): 17mm/0.66mm. Designed for post batteries and side batteries with standard post adapters. Insulation shell that can quickly power the battery, then insert a new battery that can be firmly fixed. The cable is fixed by a screw terminal. Item dimensions: 6.9 x 4.7 x 2.8 cm - 2.7 x 1.9 x 1.1 - 1 pair of battery terminals for quick connection of batteries