4 pcs Chisel Set Square Hole Drill Bits, Steel Hollow Chisel Woodworking Tools Set (1/4-1/2-5/16-3/8 Inch)

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About this item

Professional design ideal for drilling square holes in wood with a mortiser. Fits all machines and drill attachments. The square hole drill bit is mainly used in the woodworking field. Material and size: Made of high speed steel Heat treatment, HRC48~50, high hardness, elongated center, high concentricity; 4 sizes 1/4" (6.35mm), 5/16" (7.94mm), 3/8" (9.5mm), 1/2" (12.7mm). Why choose this item: Reduces the labor intensity of construction workers while accelerating the work speed and reducing costs Perfect for the construction, renovation and decoration industries. Package Contents: 1pc 1/4" (6.35mm), 1pc 5/16" (7.94mm), 1pc 3/8" (9.5mm), 1pc 1/2" (12.7mm), Note: The punch square needs to use a drill, hammer or other tools (None of these are included).. Returns, Refunds and Replacements Delivery Timeframe Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows: For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.