TIMco Tin Coated Step Drill 4-20mm Ideal for drilling, enlarging or de-burring a precise hole into thin materials such as alloy and non-alloy metals up to a thickness of 4mm. • Titanium Nitride (TiN) coating to reduce friction and prolong the life • High-quality M2 Grade High-Speed Steel (HSS) • 3 flat shanks to prevent slipping in the chuck • Drilling diameter clearly marked on steps of drill for easy identification Brand by Timco
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