H7 Left-Spiral HSS Chucking Reamer | HSS & TiN | 3–16mm

BB HSS & HSS-TiN Chucking Reamers

Professional-grade chucking reamers engineered for high-precision hole finishing. Available in standard HSS (High Speed Steel) and premium HSS-TiN (Titanium Nitride Coated) versions — choose the right tool for your application.

• ✅ H7 tolerance — tight precision for demanding fits
• ✅ Left spiral flute — smooth chip evacuation, reduced chatter
• ✅ Cobalt-enhanced HSS — superior wear resistance and heat tolerance
• ✅ TiN coating option — extends tool life up to 3× vs standard HSS
• ✅ Diameter range: 2mm – 16mm — covers most common hole sizes
• ✅ Suitable for steel, cast iron, aluminum, copper and other metals

Dimensions Reference (mm)

d2 × 11 × 49  |  d2.5 × 14 × 57  |  d3 × 15 × 61
d4 × 19 × 75  |  d4.5 × 21 × 80  |  d5 × 23 × 86
d5.5 × 26 × 93  |  d6 × 26 × 93

About BB Tools

Feel free to mix and match different specifications from our store in a single order — we'll ship everything together as one package.