13 pcs. set $10 less 20% coupon=$8.00 http://www.harborfreight.com/13-piece-left-hand-drill-bit-set-95146.html
Bought them for the following job.
On vehicle, engine under cover for radiator protection. 6mm dia 18mm long *1 pitch a number of bolts snap due to corrosion,when removed. New York State and much road salt in winter. The bolts where a cheap grade 2.
Soaked them with Kroil a week then add Kroil today and tried the drill set. No luck. Was hoping for the broken bolts to back out.
At least got to use the correct drill for the tap. Re-tapped some holes and bought stainless steel replacement bolts and installed.
That said I like the drill bits. Used them on my cordless drill that did a better job with more cutting action than an electric drill which had almost no cutting.
Bought them for the following job.
On vehicle, engine under cover for radiator protection. 6mm dia 18mm long *1 pitch a number of bolts snap due to corrosion,when removed. New York State and much road salt in winter. The bolts where a cheap grade 2.
Soaked them with Kroil a week then add Kroil today and tried the drill set. No luck. Was hoping for the broken bolts to back out.
At least got to use the correct drill for the tap. Re-tapped some holes and bought stainless steel replacement bolts and installed.
That said I like the drill bits. Used them on my cordless drill that did a better job with more cutting action than an electric drill which had almost no cutting.
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