Compatible with Lead-Acid Batteries and Top Post Standards Works with AGM, GEL, WET, MF, and CA/CA lead-acid batteries. Designed for SAE, DIN, and EN tapered top posts. (Note: JIS pencil posts not supported. Lithium batteries may require a stud-to-post adapter.)Dual 4-Way Battery Terminal Block Set with Enhanced Compatibility This bundle includes two 4-hole battery terminals (each with two 2/0 AWG and two 1/0 AWG holders). One set includes both a top-mounted and OEM post adapter for flexible connection to factory battery clampsno cutting required.Wide Vehicle Application Across Daily & Heavy-Duty Use Suitable for cars, pickups, motorcycles, caravans, RVs, buses, and trucks. Confirm your batterys tapered post size before installation for optimal compatibility.Easy-to-Tighten Head + Anti-Loosening Screw Design Both terminals are designed with user-friendly tightening heads and anti-loosening screw mechanisms, addressing common issues of poor clamping or detachment under vibration.CNC-Machined 6061-T6 Aluminum with Conductive Zone Design Crafted from heat-treated 6061-T6 aluminum alloy with precision CNC machining. One version features textured surfaces for added wear resistance, while the other includes a conductive zone with anodic oxidation removed at contact points for improved electrical flow.