Question 1

So are any of these bits jis? Because I don’t see jis stamped

Accepted Answer

I’m going to say no, just because of how they’re labeled PH1 PH2 PH3.
PH meaning Phillips.
Vessel usually labels their JIS drivers +1 +2 +3 or P1 P2 P3.
P meaning Plus.
Though I’m surprised Vessel made a set with Phillips bits, not JIS bits.

Having said all that, this is a decent set that I use regularly.
I have only experienced cam-out either when using cheap screws, or operator error.

Question 2

Does anyone know of the grooves on these line up properly with the ball detent on American style impact drivers?

Accepted Answer

The ball detent lines up with about the ball on the bit. It locks securely into an impact driver but has a couple millimeters of back and forth movement inside the collar. In a Milwaukee M12 Surge Impact Driver, just the head of the bit sticks past the collar. The movement is just slightly more then my long Milwaukee and DeWalt bits and extenders.

Question 3

Are the cross points JIS?

Accepted Answer

Short answer - NO. The cross points are marked PH1 / 2 / 3 and PZ1 / 2 / 3. The PH is for Phillips and the PZ is for Pozidrive. I haven't tried the PZ on my JIS fasteners but based on the description they seem similar to my JIS Vessel screwdrivers.

From the internet. "A Pozidriv has ribs between each of the four arms of the cross. This increases the grip between the bit and the fastener. A Phillips bit fits in a Pozidriv screw head, but it will most likely cam out before the fastener is fully tightened. ... A Pozidriv bit does not fit in a Phillips screw head"

Question 4

Q: Vessel, do you offer metric hex 2.5 mmbits? thank you

Accepted Answer

Yes and we will prepare Hex 2.5mm tip bit in near future! By the way, Hex 3/32" is 2.3mm so it is a sort of 2.5mm.

ASIN	B08WHYFQYL
Best Sellers Rank	153,473 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,112 in Screwdriver Bit Sets
Bit Compatibilities	bit holder
Bit Set Composition	Bit Set
Bit Tip Configuration	Magnetic Tip
Brand	VESSEL
Customer Reviews	4.8 4.8 out of 5 stars (507)
Drive Bit Application	industrial
Drive Bit Shank Style	Ball Shank
Drive End Style	Magnetic tip
Drive System	Torx
Finish	Unfinished
Included Components	Manufactuered Brand Product
Item Length	1.38 Inches
Item Type Name	Tools
Item Weight	0.62 Pounds
Manufacturer	VESSEL
Material	Metal
Model Number	IB31P02U
Number of Items	1
Number of Pieces	31
Part Number	426115
Set Name	VESSEL IMPACT BALL™ Impact Ball Torsion Bit Set 30+1pc
UPC	840921141310
Unit Count	1.0 count

VESSEL Impact Ball™ Torsion Bit 30+1 PC. Set in Slide CASE No.IB31P02U Made in Japan by VESSEL

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