مجموعة ريش ثقب الخطوة 10181A من NEIKO ، 3 قطع ، مخدد حلزونية للحفر الأسرع ، قطع الخطوة للفولاذ المقاوم للصدأ ، المعادن ، الخشب ، البلاستيك ، رؤوس مثقاب مخروطية Unibit مع إجمالي 31 خطوة

Constructed of industrial high speed steel with titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel and other types of sheet metal
Unibit split point tip accelerates cutting speed while preventing angled walking away from center line of bore
Two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting
Quick change 1/4-inch hex shank makes for easy, convenient bit switches and is compatible with impact ready power tools
Assortment comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill (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-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch)