The wax-and-oil formula is specifically developed to eliminate wax bloom

and it's refillable with standard Pilot RFN-GG or BLS-G2 medium-point cartridges rather than being thrown away once it runs dry

The 1mm tip gives you control for tight lettering and precise lines

8 mm bullet tip for detail work — and the ink is the same water-based dye formula

pentel graphgear 1000 for pro pg1009 mechanical pencil 0 9 mm Saeio The wax-and-oil formula is specificallyLead: 0. 9 mm bold 4 mm fixed tracing pipe dual action spring clip retraction Body: Satin brushed heavy aluminum knurled steel grip with yellow silicone pads Features: Rotatable lead hardness indicator window full metal frame for heavy field and industrial use The heaviest diameter in the GraphGear 1000 range a thick 0. 9 mm bold lead setup that eliminates graphite breakage under intense heavy handed pressure. The substantial aluminum weight