Aluminum base and shield with steel inner spring. CALIFORNIA PROPOSITION 65 WARNING WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
Work well, but flimsy By Taylor Tesler from Fort Collins, CO Wednesday, September 16, 2020 Verified Buyer Keep tubes secure but the base and shield are super thin, flimsy aluminum. A couple bases got out of shape pretty quickly. If you are considering these for a higher value amp, I would spend the extra $ on others that are stronger
Finally found what I needed to finish a radio I was restoring By Marvin Simons from Trussville, AL Saturday, September 21, 2019 Verified Buyer I found these tube shields finally. Now I can finish the restoration of a radio I am working on. These shields fit perfectly. Sure glad I was able to get them from Stewmac!