Aleric Step Drill Bit Set - Titanium Coated, High Speed Steel Drill Cone Bits for Aluminum, Wood and Plastic Hole Drilling Cutting, Multi Size Hole Stepped Up Unibit for DIY Lovers,3pcs

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About This 【QUILITY STEP DRILL BITS】 The step drill bits are made of classic high speed steel with titanium coating for proven capability and durability in drilling holes in plasti c, aluminum, wood board, copper, stainless steel ect. 【DOUBLE CUTTING BLADES DESIGN】The high speed steel step drill bit set is designed with double cutting blades, which provides faster, smoother and accurate drilling. 【TRI-FLATTED SHANK】 Each unibit step drill bit optimally fits into power tools such as impact drill chucks securely and eliminates slip for higher efficiency of output. 【WELL PERFORMED 】 The multiple hole drill bit set include 28 size, which can cuts through steel, aluminum , wood board and other surfaces creating relatively clean holes as you drill. Suitable for home DIY, and general building/ engineering use.t slippage and shedding during the rotation. 【SET INCLUDES】The cone drill bits set includes 3 common sizes for versatility. Bit #1 (6 steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"; Bit #2 (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"; Bit #3 (9 steps): 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4". If you are not fully satisfied with the step bit for any reason, please contact us for 100% refund or replacement. Overview Material : Stainless Steel Cutting Diameter : 0.5 Inches Finish Type : Titanium Shank Type : 3-Flat Cutting Angle String : 118 Degrees Show more