Features： 1、300A power distribution block heavy duty bus bar box with 3/8in M10*4 terminal studs. 2、Module box design for easy wiring configurations. Removable windows for unobstructed wiring. 3、Fiberglass reinforced nylon base and cover ensure great mechanical strength and durability. 4、Widely applied to 12-48V car, trucks, RV, marine, boat power systems. Store the negative wires in one box, more clean and tidy storage. 5、Easy to mount, screws fixation, firm and stable. Specification： Features: 300A power distribution block heavy duty bus bar box with 3/8in M10*4 terminal studs. Module box design for easy wiring configurations. Removable windows for unobstructed wiring. Fiberglass reinforced nylon base and cover ensure great mechanical strength and durability. Widely applied to 12-48V car, trucks, RV, marine, boat power systems. Store the negative wires in one box, more clean and tidy storage. Easy to mount, screws fixation, firm and stable. Specifications: Model: F3607-M10 Max Operating Voltage: DC 48V Max Continuous Current: 300A Terminal Stud Size: 4 x M10（3/8in） Material: Nylon, Fiberglass, Stainless Steel, Brass Color: Black Item Weight: 403g/14.2oz Package Weight: 428g/15.1oz Item Size: 13.8*6.9*4.5cm/5.4*2.7*1.8in Package Size: 14.5*7.5*5.5cm/5.7*3*2.2in Package List: 1*Power Distribution Block Package List： 1*Power Distribution Block