Schmidt 5888 Ceramic Rollerball Metal Tube Refill Broad Point 1.0mm, Black, 2 Pack Blister (SC58106) Safety Ceramic Rolling ball Refill with metal tube. Stainless steel tip with 1.0 mm, broad point ceramic ball. The safety technology features extended shelf-life characteristics. Suited for use in pens without cap sealing. 2 Piece Pack.