The Ito-ya pencil is made by Camel. Per CWPE the eraser was designed for Camel by Eiichi Kato. Most pencils with this sort of ferrule-free eraser experience are made by Camel. I’ve reviewed another Camel pencil here.
I love the look of ferrule-free erasers. That’s no different on the Helvetica pencils. All the erasers are black, no matter the color of the pencil. They are available in white, black, red, and gray. You can find mixed packs on Amazon. I purchased a 12 pack with 6 red and 6 black pencils. The paint is thick and well applied to a perfect satin finish. It’s not quite dull enough to call it matte but also not shiny. The black paint and eraser feel stealthy. TThe imprint is printed rather than debossed. On all the pencils the imprint is glossy black. It stands out quite well on all the colors, even the black on black it looks great. Very minimalist.
Inside the paint is nicely fragrant cedar, which sharpens up in any sharpener I own. Inside that lovely cedar is smooth dark graphite. The writing experience with these is silky smooth. The graphite is dark too. If you own the Camel 60 pencil the Helvetica is significantly softer and darker. I’d liken it to a B Misubishi 9850 or Nataraj Super Black pencil. That is to say, dark and smooth.
Honestly, when I bought these I didn’t put mine down until it hit Steinbeck stage, then I immediately sharpened up another. Though these are $15 for a 12-pack, they are so pleasant to use that I keep an eye on Amazon and keep them in my future to buy cart. I also like to include them in trades and pencil gift package.