Widely Application: Drilling, Tapping And Deburring/ Countersinking In One Bit, One-Step Processing, Greatly Save Processing Steps And Time Costs, Improve Working Efficiency. | | Top Grade Quality Corrosion Resistance: Bonderizing Surface Protects The Metal From Corrosion. Improve The Finish Adhesion And Corrosion Resistance. High Quality, Long Lasting And Durable. | | High Quality Material: Hss For Fast Cutting Against Tough Wood Material. High Hardness, Offer Superior Cutting Power And Durable. | | Set Includes: 9 Jobber Length Drill Bits: Wire Gauge Sizes #36, #29, #25, #21, #7; Letter Sizes F, U; Inch Sizes 5/16", 27/64". 9 Hand Taps: 6-32 Unc, 8-32 Unc, 10-24 Unc, 10-32 Unf, 1/4"-20 Unc, 5/16"-18 Unc, 3/8"-16 Unc, 7/16"-14 Unc, And 1/2"-13 Unc. | | Easy Storage : Set Includes The Indexed Metal Case For Easy Storage And Organizing. We Only Care About Your Satisfaction. We Stand Behind All Of Our High Quality Products So We Offer A No Question Asked .