We don't know the first thing about this brace of Cross mini pencils. They are very skinny and just about as wide as a tie clip pencil, but they don't have tie clips. The front writing instrument is made of solid sterling silver. It has some dents in the nose cone but it seems to work well. You twist the nose cone to advance or retract the lead that we think is .9mm. Its matching pencil is "1/30 10k Gold RGP." We think that mean Rolled Gold Plating. It works well, too, and there is much less damage or wear to the RGP pencil. Both measure 8.8cm.