This Schneider Express 225 "G1" format refill features a medium line width (0.4mm) and a wear-resistant stainless steel tip for complete ink utilization. It is designed for clean and waterproof writing, offering approximately 6000m of writing distance. The refill is 106mm long with a 30mm tip-to-shoulder length. It is generally compatible with Paper Mate Lubriglide and Paper Mate PowerPoint refills for modern Paper Mate pens, and may fit vintage Paper Mate pens that used the Lubriglide refill, though compatibility with older models can vary. This refill is also known as a large capacity refill in a premium design and is indelible. The barrel material is metal.