20 Pack -Schmidt 635 Mini D1 Refills - Black Twenty Mini D1 size ball point refill by Schmidt. Equipped with nickel silver tip and stainless steel ball. Refill Reads: Schmidt Mine 635 M Length: 2.6 inch (66.0mm) Made in Germany - Distributed by Lanier Pens - USA, Ensure TOP Quality product - buy direct from Distributor!