【3PCS-28 Step Sizes】Bit #1 (6 Steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"; Bit #2 (9 Steps): 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4".Bit #3 (13 Steps): 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2". Replace 28 individual drill bits, save s great amount of money and troubles. | 【Wide Application】Prefect for sheets of √Metal √Wood √Plastic √Aluminum √Copper × NOT FOR Steel and Hard Metal. Suitable for Home DIY, General Building and Engineering Use. | 【HSS with Titanium Coating】Industry grade fully ground high speed steel with titanium coating reduces friction and drills with less heat, which ensures strong wear-resistance and durability. | 【Efficient Design】√1/4" Hex-Shank quich change fits into majority pistol drill and drill press securely without slip and shedding. √135° X-type split point and Two-flute double cutting blades design garuantees a faster and smoother cutting, allows particles escape easily. No center punch is needed. | 【90 Days Warranty】If you are not fully satisfied with our product for any reason, please contact us for 100% refund or replacement.

【Safety Comes First】With 3+ times fluorescent background material and 30% more retro-reflective strips than Class 1, Amoolo hi vis vest strictly complys with ANSI 107-2015 Type R Class 2 standards. Four 2-inch reflective strips provide enhanced 360° reflectivity and protection during work or outdoor activities under any lighting conditions. | 【Unique Considerate Design】Heavy Duty Front Zipper to ensure long-term duribility (easy to put on and off) |Reinforced Bartack Sewing for all pockets, velcro and zipper edges |Padded Neck, get away from rashes, supporting long-time wearing neck comfort while carrying extra weight. | 【Extra Convenience&Comfort】9 Multi-Functional Front Pockets, double-layer badge/ID card "window" pockets and two side pockets to keep hands warm in winter |100% polyester, highly durable, breathable and machine-washable material. | 【Highly Versatile】Ideal for Multi- Work Space/Jobs: Construction, Road Work, Forestry, Warehouse, Airports, Crossing Guard, Surveyors, Manufacturing, Volunteer, etc |Recreational Activities: Night Walking, Running, Cycling, Hiking, etc. | 【Warranty Tips】Amoolo safety vests are produced by world's top-tier factory, tailored for US&EU market's sizes but Referring To The Size Guide is recommended before your purchase |Amoolo offers 90-day Hassle-Free Warranty Policy, exchange or refund guaranteed for any defect.