The Koh-i-noor Leadholder 5347 is a chunky clutch pencil with a 2B 5.6mm graphite lead.
From this famous Viennese company, makers of the first pencil, it's an excellent drawing instrument, the plastic barrel carefully weighted to provide control and the spring-loaded lead emerging from strong metal jaws at the push of a button on the end of the barrel.
The Koh-i-noor Leadholder 5347 comes with a spare lead.