Toolex Reamer - Stub Type - Spiral Flute - Straight Shank - HSS-E - H4 - 3.78mm

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3.78 mm Toolex Reamer is a stub-type, straight-shank reamer ground in HSS-E (M35 cobalt) to finish holes to ISO H4 tolerance. It features a left-hand spiral flute with right-hand c utting for precise bore finishing, designed for use in challenging materials. Diameter: 3.78 mm Material: HSS-E (M35 cobalt) for enhanced wear resistance Flute configuration: Left-hand spiral flute Cutting direction: Right-hand cutting Shank type: Straight shank for easy mounting Standards: DIN 8089; ISO H4 tolerance Type: Stub reamer Manufacturer: Toolex Ltd Lead time: Manufactured to order; despatch within 24–48 hours This reamer is designed to deliver repeatable, accuracy-focused finishes on bore diameters requiring tight H4 tolerances. The cobalt-enriched HSS-E composition provides longer edge life in tougher materials, while the straight shank and left-hand spiral flute support stable cutting and efficient swarf evacuation during reaming operations. Show more