Premium Material: Glass fiber reinforced nylon base ensures great mechanical strength and durability. Unique Design: Transparent dust-proof cover with groove on the for the attachment of sticker, convenient to recognize. High Current: Large voltage, large current, high current copper strip up to 150A (brass), high safety factor. Anti-: Stainless steel screws and nuts for enhance its and rust resistance in the saltwater or environment. Ultra-safe: Base plate with good insulation effect to ensures no electric leakage when installed on metal boat or car body. Bolt Material: Tin Plated Brass Base Material: Fireproof Plastic Continuous Current: 150A Maximum voltage: 300V/AC; 48V/DC Rated current: 130A/AC; 150A/DC Dimension: Screws: 12X4mm (5/32 inch), Bolts: 4X6mm (1/4 inch) Colour: black Material: plastic + metal Package Contents: 1 * Terminal Bus Bar Block 1 set * Mounting Accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.