ITEM NAME:Bus Bar Terminal Blocks Heavy Duty M6+M6 Negative Power Distribution Studs #gib Product Description Description: Features: 1. The base is made of flame retardant plastic to protect your safety 2. Suitable for trucks, RVs, coaches, boats, etc. 3. Allow terminating of heavy-duty cables for one or more connections 4. Red and Black color allowing easy and clear color coding for wiring 5. Glass Fiber reinforced Nylon base ensures great mechanical strength and durability 6. Heavy duty terminal studs Specifications: Color: Red, Black Base material: Nylon, Glass Fiber reinforced Max amp per circuit: determined by wires connected Stud size: 2 x M6 (1/4") (RED) 2 x M6 (1/4") (BLACK) Installation method: surface screw fixed installation Weight: about 135g Single size: 45 x 43 x 33mm/1.77 x 1.69 x 1.30" Included: 1 x Black Power Terminal Bock 1 x Red Power Terminal Bock 4 x Screws.Stud size: 2 x M6 (1/4") (RED). 2 x M6 (1/4") (BLACK). Base material: Nylon, Glass Fiber reinforced. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.