Hi-Ker was the unpromoted line from Cheerio, so their models were very similar. The Sparklemaster used the same blanks as the Cheerio Glitterspin, and many colors are identical as well. Pictured here is a White Sparklemaster with clear jewels. An impressed logo in red at center.
This one is from the original Cheerio/Hi-Ker company, which were slightly oversized at 2 3/8" Diameter.
Some Glitterspins actually have this Hi-ker stamp UNDER the foil sticker. Either Hi-Ker seconds, or liquidation slower Hi-Ker stock to the more popular Cheerio label.