Black multi-step drill bit with stacked conical steps and gold size markings from 3/16 in to 1/4 in, used for drilling progressively larger holes.
Product packaging for ThunderMAX step drill bit set (1/4 in.–3/4 in.) with 9 steps and tempered black finish, Alpha brand, metal/plastic composition visually shown.

ThunderMax Step Drill Straight Flute 1/4in -3/4in Imperial Carded

SKU: C9STI14-34TM
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Technical Specs

Type of Measure
Imperial
Series
Thunder Max
Subcategory
Step Drills
Shank Size (mm)
9.5000
Flute Type
Straight Flute

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