Dual 8 Awg inputs for subwoofer terminals machined from aluminum 
Total of 4 units so 1 full set will do 1 subwoofer.
Height .64" Width .42" Length .59" (without post) 1.11" Including post
Post is .15" with machined lip to prevent it from backing out 
Input hole size is .20"
This allows you to hook multiple 8 awg wires to one subwoofer input making it easy to wire your subwoofers with 8 awg wire.