Photo 1 of AIMLENTOOL HSS Spiral Groove Step Drill Bit, 12 Steps High-Speed Steel 1/4" to 2-3/8" Drill Bit for Stainless Steel, Aluminum, Plastic, and Wood, Large Multiple Hole Stepped Bit for DIY Lovers

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Photo 1 of AIMLENTOOL HSS Spiral Groove Step Drill Bit, 12 Steps High-Speed Steel 1/4" to 2-3/8" Drill Bit for Stainless Steel, Aluminum, Plastic, and Wood, Large Multiple Hole Stepped Bit for DIY Lovers