Pentel N50XL C Chisel Tip Permanent Marker Blue (Pack of 6)

Euroffice

Heavy duty jumbo marker. Permanent waterproof ink. Extra large ink capacity. Hard-wearing tip. Chisel tip for a 15.4mm to 8mm. Barrel colour matches ink colour. Ink colour: Blue. Pack of 6. Will write on almost any surface. Vivid waterproof ink.

Amazon

Sturdy markers in aluminium housing – Built to last with a durable strong fibre tip Will write on almost any surface