±0.1mm. That's the tolerance we hold on every DID club head.
You won't feel 0.1mm in your hand. But you'll see it in your data: launch angle, spin rate, carry distance — all more consistent than a head built to ±0.3mm or ±0.5mm. Tighter tolerances mean the club performs where it's supposed to perform, every time.
This is why we finish every head in Japan. Not for the label. For the number.