Hole Saws - Carbide SM

Starrett SM carbide-tipped hole saws are designed for smooth, controlled cuts with minimal vibration, which makes them well suited to precision drilling tasks across a range of materials. Tungsten carbide teeth give extended tool life compared with standard bi-metal alternatives, so they hold their cut quality for longer. The SM range covers diameters from 15mm to 100mm, mostly in 1mm steps up to 40mm, so you can choose a very close match where a hole must fit a fitting or component accurately. How to choose: choose SM when a clean, accurate hole matters more than raw speed. For mixed-material work, compare it with the MPH multi-purpose range; for very thick or abrasive materials, see the CT and CTD ranges. Usage tips: mark the centre accurately, start slowly so the pilot drill locates cleanly, then cut at a steady speed with light, even pressure for the smoothest finish. Why choose SM for precision work? The SM design focuses on smooth, controlled cutting with minimal vibration, which helps when a hole must be accurate. Which size do I need? Measure the part that must pass through the hole and choose the nearest diameter that gives the clearance you need.