Toolex Reamer - Straight Shank - Spiral Flute - Carbide - H5 - 4.25mm

The Toolex Reamer is a straight-shank carbide finishing tool designed to bring drilled holes to an exact 4.25 mm diameter with a tight tolerance. Its left-hand spiral flute and right-hand cutting geometry deliver clean bore finishes and efficient chip evacuation, helping you achieve consistent results across jobs.

Made from intermediate precision carbide (K10) and finished to H5 tolerance (±0.003 mm), this reamer provides repeatable performance with DIN 212 B–style precision. The straight shank supports secure seating in common toolholding, making it a reliable choice for both one-off projects and production work.

• Exact 4.25 mm bore with tight ±0.003 mm tolerance: Delivers consistent hole size and reliable fits across parts, aligned with DIN 212 B–style precision.
• Left-hand spiral flute with right-hand cutting: Ensures efficient chip evacuation and smooth bore finishes, reducing downtime and improving surface quality.
• Straight shank in intermediate precision carbide (K10): Provides long tool life with rigid, repeatable seating in standard collets and holders.

Using this reamer helps you achieve precise holes right from the first pass, minimizes secondary finishing, and supports a smooth, repeatable workflow. The carbide construction offers durability in demanding applications, delivering reliable performance across batches and reducing the need for rework.