GMK Supply "Hole Thing" - Metric Shock Piston Drill Set

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This is "Hole Thing" shock piston metric size drill set from GMK Supply. This shock piston drill set includes drill bits from 1.05mm to 2.0mm in 0.5mm increments! Also included in this kit is a pin vice for holding the drill bits, as well as two collets for adjustability. This is the perfect tool for customizing your shock pistons to exactly the size you want!

This product was added to our catalog on September 1, 2006.

Gary Kosits
Monday, Mar 19 2012 (about 3 years ago)
GMK Supply "Hole Thing" - Metric Shock Piston Drill Set
Hi Scott - Thanks for purchasing one of my drill sets, and for taking the time to write a review. The pin vise included in the set includes two collets, and each collet has two ends with different clamping ranges - so a total of four collet sizes are included. Between those four sizes, every drill bit in the set can be gripped. The second collet is stored under the swivel on the other end of the pin vise - you may not have realized it was there. Note - To submit this review, the software requires me to make a rating. I wouldn't ever just come on and rate my own products highly - I just wanted to see if I could help Scott out with the issue he raised. Gary - GMK Supply
Verified Owner
Sunday, Aug 31 2014 (6 months ago)
GMK Supply "Hole Thing" - Metric Shock Piston Drill Set
I normally don't bother with reviews, but this thing is junk. Like others have said, the drills are fine, but the pin vice/handle thing is COMPLETELY useless. It comes with 4 collets and none of them fit the 1.4 to 1.8mm drill sizes. The sizes I use most often. I see the manufacturer left a 5 star review saying that there were 4 collets and the other reviewer must not have known that. Well, I'm telling you the collets are not sized right and the ones that do fit are so poorly made that the holes in them are not straight and the drill wobbles so bad i can't even imagine trying to make a precision hole with it. Complete junk! Just avoid this unless all you want is the actual drills. I wish I could give zero stars.
Nicolas Behar Piquero
Verified Owner
Tuesday, Mar 18 2014 (about a year ago)
GMK Supply "Hole Thing" - Metric Shock Piston Drill Set
I have the same issue as the two people that already reviewed the product. There is only one side of the supplied collets that accept the drill sets, a shame.
Steve H
Verified Owner
Friday, Feb 15 2013 (about 2 years ago)
GMK Supply "Hole Thing" - Metric Shock Piston Drill Set
The drill bits are great! As it was mentioned before the hand drill seems to have trouble with bits in the in between sizes. For the 1.6, I used the 2nd largest collet and hand tightening held in in place but when I tried to use it, the bit slid. I needed to use an adjustable wrench and a needle nose plier to get it tight enough. Which of course, left marks on the handle. Not a big deal, but a little annoying.
Verified Owner
Wednesday, Mar 14 2012 (about 3 years ago)
GMK Supply "Hole Thing" - Metric Shock Piston Drill Set
The drill bits in 0.5mm increments are great!!! The let down is the hand drill which does not accept ANY of the supplied bits that i needed to use. It seems that to suit drill bits sized between about 1.2mm and 1.5mm, neither collet will work as the nut to secure the bit will not reach the thread to allow it to be tightened... Great bits, poor design of drill.

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