Countersink Drill Bit Set, Carpentry Woodworking Boring Tools Carpentry Reamer with Hex Key for Plastic Wood DIY Wood 3mm - 10mm(4.5mm)

• Drill bit is made from carbon steel and countersink is made from good quality 45# steel which ensures a long service life
• Combined drill bit and countersink bit is great for drilling, chamfering, deburring and countersinking
• There are 10 sizes of 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm and you can choose the one you need
• Five flutes design provides small chip loads and quicker removal, it can discharge wood sawdust more rapidly and smoothly
• Suitable for drilling holes on board of low hardness such as wood, plastic and other soft material

Specifications: Material: Carbon steel(drill bit), 45# steel(countersink) Countersink Flute: 5 Drill Bit Diameter: 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, 3-10mm(3/4/5/6/7/8/10mm), 3-6mm(3/4/5/6mm)(Optional) Countersink Diameter: 15.8mm Hex Key Size: 55 x 20mm Quantity: Your choice Package Includes: 1pc(or 1 set) x Countersink Drill Bit 1 x Hex Key Note: There are only 7pcs in 3-10set, and only 4pcs in 3-6set.