Magafor Reamer - Spiral Flute - Straight Shank - HSS-E - 4.20mm ER Collet Chucks Pin-assisted bore opening: Pins keep

Pin-assisted bore opening: Pins keep the collet open during the boring process

Rib-Processing Square Edge: Sharp

With a straight shank and left-hand spiral flute paired to right-hand cutting

4 Flute Long Length — 3 mm diameter

Built for reliability and versatility in CNC milling

Magafor Reamer - Spiral Flute - Straight Shank - HSS-E - 4.20mm ER Collet Chucks Pin-assisted bore opening: Pins keepMagafor Reamer is an intermediate precision HSS E (M35 Cob) straight shank reamer, sized at 4. 20 mm, designed for finishing holes with tight, repeatable tolerances. Its ideal for engineers, machinists, and workshop professionals who require reliable bore quality across a variety of materials. Featuring a left hand spiral flute and right hand cutting, it delivers stable cutting action and efficient chip control for consistent hole finishes. Left hand