Modular box design for easy wiring configuration Glass fiber reinforced nylon base and shell high mechanical strength and durability is detachable for -free wiring, which reasonably accommodates the wires inside the vehicle and Highest amperage rated bus bar (250A) with terminal studs Module box design for easy wiring configurations Glass Fiber reinforced Nylon base and enclosure ensures great mechanical strength and durability Removable windows for unobstructed wiring Blank write-on space on the top allows easy labeling for each branch Product application: widely used in power supply of automobiles, yachts and ships [Pair net weight]:M8 studs 420G, M10 studs 500G [Pair size]: 25.5 x 10 x 6CM [Maximum voltage]:48V DC [Each stud rated current]:62.5A [The whole electric block rated current]:250A [Auxiliary terminal screw current]:20A [Product role]:The wire harness , reasonable storage of car and boat inside [Applicable ]:Automobile, RV, , yacht and other power color:Black+red Material:plastic+metal Package Contents: 4 x Car Box 1 Pair x Red and black pair-M8 1 Pair x Red and black pair-M10 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.