Rite in the Rain All-Weather Red Lead Refill (No.99RR )

Amazon.com Price: $7.05 (as of 05/01/2018 14:38 PST- Details)

LEAD: Break resistant Red – B (No. 1) refill for Rite in the Rain Mechanical Pencils
WRITING: Thick 1.1mm lead for smooth bold markings.
STORAGE: Store extra leads in mechanical pen barrel below the erasers