DeWalt 587211-05 — Brush & Brush‑Holder (Brushbox & Choke) replacement. Compact graphite/carbon brush with integrated holder/choke sold as a single unit to restore reliable armature contact, reduce sparking and prevent motor overheating in small corded drills. Designed as a direct-fit brush assembly for legacy compact drill motors (listed compatibilities include models such as CD71RE, KR50RE and KR55CRE) and supplied as one brush + holder — easy swap-in installation gets worn motors running smoothly again. Ideal for techs and DIYers who keep DeWalt  parts on hand for quick motor-service repairs.