SRAM X0 Front Derailleur 2x10 speed Compatibility and specifications

SRAM X0 Front Derailleur 2x10s MTB 2011 Model series.

Sram X0 front derailleurs comes in 12 references (!!) for 2x10 speed specific, that means there are also 12 models for 3x10 setting, geez, that is getting very specific just to shift a couple of gears only.

Ok, here are the 2x10 X0 2011 references:
2X10 HI CLAMP DUALPULL φ31.8 #19011028
2X10 HI CLAMP DUALPULL φ34.9 #19011029
2X10 HI CLAMP DUALPULL φ38.2 #19011030
2X10 LO CLAMP BOTTOMPULL φ31.8/34.9 #19011031
2X10 LO CLAMP TOP PULL φ31.8/34.9 #19011032
2X10 LO CLAMP BOTTOM PULL φ38.2 #19011033
2X10 LO CLAMP TOP PULL φ38.2 #19011034
2X10 HI DIRECT MOUNT DUALPULL #19011035
2X10 LO DIRECT MOUNT S1 39T TOP PULL #19011036
2X10 LO DIRECT MOUNT S1 42T TOP PULL #19011037
2X10 LO DIRECT MOUNT S3 39T TOP PULL #19011038
2X10 LO DIRECT MOUNT S3 42T TOP PULL #19011039
Speeds 10 speed for 2X10 system
Weight 130 grams (low clamp model weight)
Compatibility 10 speed only
36 Tooth
Pull Top or Bottom
Technology X-Glide shifting technology
If you mount a 2x10 Sram front derailleur, you should be using a Double specific left shifter.

Compatible with Sram 10 speed shifters, XX, X0, X7, SL-700, Double-Tap flat bar, R2C Aero, 900 TT, 500 TT, Red Double Tap controls, Force Double Tap controls, Rival Double Tap Controls, Apex Double Tap Controls.