Hole Saws - Bi-Metal CSC

Starrett CSC bi-metal hole saws are a practical, general-purpose choice for tradespeople who drill smaller holes day in, day out. A hardened tooth edge is combined with a flexible alloy body, giving a good balance of durability and cutting speed. The CSC range covers diameters from 16mm up to 51mm, which makes it particularly useful for electrical, plumbing and general trade work: cable entries, pipe holes, back boxes and small service penetrations. How to choose a size: measure the outside diameter of the pipe, cable gland or fitting that needs to pass through the hole, then choose the closest hole saw size that gives the clearance you need. Usage tips: drill a pilot hole first with the arbor's pilot drill, run the drill at a moderate speed, ease off as the teeth break through, and clear the core from the hole saw between holes. On metal, a little cutting fluid helps keep the teeth sharp. The CSC hole saws are compatible with all major arbor systems and standard power drills. See our hole saw arbors if you need a new arbor. What materials can CSC bi-metal hole saws cut? They are general-purpose hole saws for typical trade materials. For deep holes in thick timber choose the DCH range; for abrasive materials choose a carbide-tipped hole saw. Why does the hole saw overheat? Usually the speed is too high or the core is packed with debris. Slow down and clear the core regularly.