From the review:
Today’s review looks at some conversion parts we think will be of great interest to players with Chaos Space Marine armies for Warhammer 40k. These Sonic Helmets and Chaos Shields are from MaxMini, a company well known for their 28mm conversion parts, resin scenery and gaming accessories. We’ve made use of MaxMini’s excellent Bionic Bits in our Iron Guard army, so we’re eager to see how their chaos bits stack up.