Bahco 3834-ARBR-930ESM is a hole-saw arbor with slug ejector, sized for HSS hole saws in the 16 to 30 mm range. The 8.5 mm hexagon shank fits standard drill chucks, and the arbor includes a centre drill for accurate hole starting. Typical applications include perforations in sheet metal enclosures, distribution boxes, and general metalworking where a clean, centred hole is needed and the cut slug must be pushed clear of the crown.