Product Description Wafer fuseholder features quality construction and gold plated contacts for maximum power transfer. Clear plasitic case with integrated mounting tabs. Uses ANL wafer fuses up to 300 amps. 5/16" ring terminal posts. 3/4" opening in each end is large enough to accept 1/0 ga. wire. 4-7/8" L x 1-1/2" W x 1-1/2" H.