3mm-5.5mm HSS Co Double Ended Drill Bit High Speed Steel For Steel Iron Aluminum
Product Description:
- Product Name: HSS Co Double Ended Drill Bit
- Diameter Size: 3mm-5.5mm (ALL SIZE)
- Material: High Speed Steel
- Handle: Round Handle
- Applicable to: Stainless steel/steel/iron/wood/plastic/copper/aluminum alloy
- Prohibition applies to: ceramic tile/concrete/wall/stone
Use tips:
- When drilling, the drill bit and the stainless steel plate are perpendicular to 90°
- If the hole is larger than 6mm, first use a 3.2mm-4mm drill to make a small hole, and then use a large drill to ream the hole
- The electric drill chuck must clamp the double-headed drill, and the exposed part should be as short as possible
- The number of revolutions of the electric drill should be between 800-1500, the effect is better, and the number of revolutions should not be too large