Toolex Reamer - Stub Type - Spiral Flute - Straight Shank - HSS-E - H4 - 6.52mm finishes drilled holes to ISO H4 tolerance with a compact, rigid stub form, designed for reliable, repeatable results in metalworking environments. Diameter: 6.52 mm Substrate: HSS-E (M35 cobalt) for longer life and sharper cutting Flute configuration: Left-hand spiral flute with right-hand cutting for a stable finish Shank type: Straight shank for easy mounting in standard toolholders Tolerance & standard: DIN 8089, ISO H4 tolerance Manufacturer: Supplied by Toolex Ltd. Manufacturing lead time: Manufactured to order; despatch in 24–48 hours Flute count: Six-flute stub design to support efficient swarf removal and stable hole finishing Benefits: The combination of HSS-E cobalt and a six-flute stub geometry delivers durable performance and precise hole finishes in steel, stainless steel, cast iron, and non-ferrous materials. The left-hand spiral flute aids swarf evacuation, while the straight shank ensures compatibility with common toolholds, enabling repeatable ISO H4 finishes in production environments. Designed for manufacturing to order, it aligns with tight tolerances without sacrificing workflow efficiency.