All models feature:Made in the USAAvailable in black or red (except dual row models)Nickel plated brass contact plate for low resistance and protection against corrosionStainless steel screws, hex nuts, and washersBase material is glass-filled nylonWhen used with appropriate insulators and shrink tube, meets USCG 33 CFR Subpart I, SAE J2120 8.5 & ABYC E-9.4 H.4-post models feature:Available with 5/16" or 3/8" postsMax amperage: 250 Amps at 12VDCMax voltage: 48VDC3 additional #8-32 screws for small connectionsMounting screws: #10 (not included)Mounting center: 5.7 inchDimensions (with cover): 6.6 x 1.4 x 2.0 inch (168 x 35 x 50 mm)10-point models feature:10 x #8-32 stainless steel screws2 x 1/4" stainless steel terminal postMax Continuous Amperage: 150 amps at 12VDC - 15 Amps per connection at 12VDCMax Intermittent Amperage: 20 Amps per connection (less than 1 minute)Max Voltage: 48VDCMounting screws: #10 (not included)Dimensions (with covers): 7.2 x 1.9 x 1.7 inch (182 x 48 x 43 mm)Includes large cover with retainers12-point models feature:12 x #8-32 stainless steel screws1 x 1/4" stainless steel terminal postMax Continuous Amperage: 180 Amps at 12VDC - 15 Amps per connection at 12VDCMax Intermittent Amperage: 20 Amps per connection (less than 1 minute)Max Voltage: 48VDCMounting screws: #10 (not included)Dimensions (with cover): 5.5 x 1.4 x 1.2 inch (140 x 35 x 30 mm)Includes terminal insulator for large stud and cover for screwsDual-bus models feature:Similar to 4-post models, with two bars on one baseBars available with combinations of 5/16" or 3/8" postsCenter divider to separate positive and negative connectionsMounting center: 5.7 inchDimensions (with cover): 5.75 x 2 x 3.25 inch (146 x 50 x 82 mm)