Corby bolt drill w/counter sink 1/4"
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Corby Countersink with pilot drill bit, for 1/4" Corby Bolts
Made in Germany, set for installing corby bolts of size 1/4"
Comes with pilot drill 4.6 mm, and the "countersink" the short stubby drill bit special made for the shoulder of the Corby bolt at 6.3 mm.
These give a very tight, clean looking fit and you might have to force the corby bolt in the scales.
Great set, a lot more robust then a stepped drill.
They work as advertised, but are expensive for what they are. The counter sink is very handy to accurately seat the corby bolts at the right depth. I would have given 5 stars if they were better value for money.
Does the job , shame it was not just one piece would save having to change bits.
Easy to use, accurate, very fast delivery, thanks