Based on this product's specifications, here are some alternatives and similar models
Twist drill bit Irwin 10502549 — 4.2 mm, single piece
Summary description:
Irwin twist drill bit model 10502549 with a 4.2 mm diameter, supplied as a single piece. Designed for general drilling tasks in compatible materials using hand drills or drill presses. The straight-shank twist design provides efficient chip removal and stable drilling for preparatory, repair and installation work requiring precise 4.2 mm holes.