Wolfride 6Pcs 1/4-Inch Hex Shank Combination Drill and Tap Bit Set Metal Deburr Countersink Drill Bit 1/8 inch-3/8 inch

• The material is HSS 4341, high hardness, high wear resistance, high heat resistance tool steel.
• Suitable for fast drilling and tapping machining.
• Suitable for wood, aluminum, iron and other materials with low hardness.
• Better to be used in tapping machine rather than hand electric drill.
• 1/4 inch hex shank, 6 sizes in one set.

Wolfride 6Pcs 1/4 Hex Shank Combination Drill and Tap Bit Set Metal Deburr Countersink Drill Bit 1/8 inch-3/8 inch Specification:Material: HSS 4341 Shank: 1/4" Hex Shank Diameter: 1/8" (3.2mm) 5/32" (3.9mm) 3/16" (4.7mm) 1/4" (6.3mm) 5/16" (7.9mm) 3/8" (9.5mm)Package Included: 6pcs 1/4" Hex Composite Tap Drill Bit Thread Spiral Screw Tap Note:It is recommended to use it on tapping machine. Please pay attention to the operation technique when using the electric drill. Excessive shaking and tilting will affect tapping and even break the tap!!!Please allow a bit error due to manual measurement. Pls make sure you do not mind before you bid.