Are the screw-on, black sections of these metal or plastic?
839070
The screw-on black section is a non-conducting hard plastic: to prevent electrical cross connections by accidental contact between positive and negative connectors when mounted onto the speaker posts. There is a metal part inside the screw-on black section that is a cylinder through which the speaker wire is inserted and then spread over its open serated end. When the black section is screwed onto the spade section, the internal metal cylinder secures the wire against the all-metal back end of the metal spade section. The positive connectors have a red band, the negative connectors are all black. This is a large, heavy-duty, and trust-worthy connector.
839071
Mine appear to be a plastic or resin material and you can crank them down tightly. They seem to be very durable and solid and have given me no problems. Hope this helps.
839072
The screw-on black section is a non-conducting hard plastic: to prevent electrical cross connections by accidental contact between positive and negative connectors when mounted onto the speaker posts. There is a metal part inside the screw-on black section that is a cylinder through which the speaker wire is inserted and then spread over its open serated end. When the black section is screwed onto the spade section, the internal metal cylinder secures the wire against the all-metal back end of the metal spade section. The positive connectors have a red band, the negative connectors are all black. This is a large, heavy-duty, and trust-worthy connector. The screw-on black section is a non-conducting hard plastic: to prevent electrical cross connections by accidental contact between positive and negative connectors when mounted onto the speaker posts. There is a metal part inside the screw-on black section that is a cylinder through which the speaker wire is inserted and then spread over its open serated end. When the black section is screwed onto the spade section, the internal metal cylinder secures the wire against the all-metal back end of the metal spade section. The positive connectors have a red band, the negative connectors are all... » Read More The screw-on black section is a non-conducting hard plastic: to prevent electrical cross connections by accidental contact between positive and negative connectors when mounted onto the speaker posts. There is a metal part inside the screw-on black section that is a cylinder through which the speaker wire is inserted and then spread over its open serated end. When the black section is screwed onto the spade section, the internal metal cylinder secures the wire against the all-metal back end of the metal spade section. The positive connectors have a red band, the negative connectors are all black. This is a large, heavy-duty, and trust-worthy connector. « Show Less
2103926
They are plastic inserts, and not part of the metal tube. I have the molded Ram mudflaps and I have about an 8th inc clearance on both sides R&L; and the plastic matches the black on the mudflaps. These are better than I expected and look great.
1386937
The base is all metal. The only non metal parts are the knob and the 4 feet. I think these are bakelite rather than plastic.
1084188
Yes, black plastic with 4 screw holes. 2 1/2 to 3" across (I didn't have a measuring stick but used my thumb LOL).
1645131
metal screws but they have rubber gaskets. i have no problem with vibration noise with these
1687873
Plastic. I doubt you can find metal knobs. These worked well for me. Look nice
1784072
These are all metal. There is some plastic in the joint werewhere mirrows move. I love mine.
755932
yes they are plastic and don't screw in very well for my needs this doesn't bother me, but may be bothersome to others.
1249016
Are they metal or plastic? The plastic ones clip on top of the metal one already on there.
613971
They're plastic caps. You drill holes and the supplied plugs secure it. No bolts needed.
2123994
They're plastic. I loaded it pretty heavily and the only thing that ever failed was the lousy wall attachments it comes with. Replaced them with molly bolts and this thing was great.
1563075
The black base is a hard vinyl/plastic, and the metal rings are chromed. They look pretty good on my truck, and were easy to install with just a screwdriver.
184990
They were metal that you screw into the wood. Seems sturdy though, holds my 210 lb husband.
517294
They are all plastic but very solid plastic. I installed them months ago and still holding strong.
357805
They are all plastic. No metal. After some use they rust. Will not last long. They only turn on with motion. So if your stopped they will not be on.
878135
I believe they are metal. Although I am not possitive. Mine are already installed. I love them. They light up also.
300898
Metal..they're supposed to snap in but some don't align so you can just duct tape them