Drill Bit Countersink Set Rotating Depth Stop Plug Wood Mill Plug Reamer 5 flute 7pcs 1/8" - 25/64" inch (3mm-10mm) Set. Drill Bit Countersink HSS Carpentry 5 Flute Wood Carpentry Chamfer Milling 7pcs HSS 5 Flute Countersink Drill Bit Set Carpentry Reamer. Woodworking Chamfer End Milling 1/8" - 25/64" (3mm-10mm.) Five-edged chamfering chip faster, more smooth Shen hole formation. Great drill accessory for any workshop backed by manufacturer's Detachable, adjustable, a set to send a small wrench. Countersunk head diameter can be drilled into the depth and control. Drill is high-speed steel material, high strength, good toughness.. Features: Woodworking chamfer , Wood countersunk head drilling. Reamer, Orientation drill. high speed steel drill, Counterbore, Countersink. The woodworking drill is made of HSS 4241,the middle chamfer drill body is No. 45 steel. Chamfer is 5 flutes,In the process of using, can discharge the wood more rapid, sink hole disposable drilled smooth, screw cap perfect embedded in the surface of workpiece. Specifications: Material: HSS 4241 and No. 45 steel. Drill size: 1/8" (3mm), 5/32" (4mm), 13/64" (5mm), 15/64" (6mm), 9/32" (7mm), 5/16" (8mm), 25/64" (10mm) Chamfer dia: 5/8" (15.8mm) Dimension: 1/8" - 3mm (Dia) x 2-23/64" (60mm)(L) 5/32" - 4mm (Dia) x 2-61/64" (75mm)(L) 13/64" - 5mm (Dia) x 3-11/32" (85mm)(L) 15/64" - 6mm (Dia) x 3-21/32" (93mm)(L) 9/32" - 7mm (Dia) x 3-15/16" (100mm)(L) 5/16" - 8mm (Dia) x 4-21/64" (110mm)(L) 25/64" - 10mm(Dia) x 4-23/32" (120mm)(L) Package Included: 7pcs x Drill Bit Countersink Set Rotating Depth Stop Plug Wood Mill Plug Reamer 5 flute 1pc x wrench Note: This product is best combined with the use of bench drill. Hand drill in the process of centering instability. Leading to drill bit bent easily broken.