Z21BP-K6 Features: -Pencil eraser refills. -Designed to fit into more than 30 Pentel general and automatic drafting pencils. -Retractable. -Refillable. -Color: White. Pencil Type: -Mechanical. User Type: -For Teacher. Lead Size: -0.5Mm. Pack Count: -1. Dimensions: Overall Product Weight: -0.01 lbs.