Package Included: You will get 3 pairs of battery post shims caps adapters terminal cable end repair kits, sufficient quantity to meet your daily application and replacement, bringing convenience to your life. Main suitable for 0.433 to 0.512 inch small battery. The 36-type thin column battery is used with this lead sleeve, and then the 16-18 universal battery clip is used to make the terminal tightly fit the battery column. | Material and Size: Battery post shims are made of lead-alloy, precise design, anti-rust and wear resistance, It is not easy to be deformed by extrusion, avoids damage during transportation, and has a long service life. Positive lead terminal shim size approx. 0.73 x 0.73 x 0.70 inch; Negative battery terminal shim size approx. 0.66 x 0.66 x 0.70 inch; | Main Advantages: The top of lead terminal shim is marked with positive and negative signs, which is convenient and easy to replace the destroyed end, just install to your vehicle battery top terminals and increase the post diameter, provide extra grip for a secure fit battery terminal posts. | Convenient to Use: Designed for positive and negative side post battery connections. Lead shims provide a secure, conductive electrical connection with batteries with worn or damaged or undersized battery posts. | Multiple Purpose: The battery post terminals adaptors with good compatibility, the practical tool is suitable for a variety of equipment with battery, wide application in ship, boat, small yacht, RV, truck, car, vehicle and so on. (Please double check that the product size fits your battery terminals top post, this battery post caps are not universal.)