Here are all the options parts for the Xray X12 EU-US 2020 and olders
Reference 06303125-K
Brand: XRAY
ALU SHIM 3x6x3.0MM - BLACK (10) - 303125-K
Reference 06372317-O
Brand: XRAY
ALU ECCENTRIC BUSHING 0.5MM - ORANGE (2) - 372317-O
Reference 06374990
Brand: XRAY
GEAR DIFF GASKET (4) - 374990
Reference 06303120
Brand: XRAY
SET OF ALU SHIM (0.5MM, 1.5MM, 2.5MM) - 303120
Reference 06303125
Brand: XRAY
ALU SHIM 3x6x3.0MM (10) - 303125
Reference 06305823
Brand: XRAY
ALU PINION GEAR - HARD COATED 23T / 64 --- Replaced with #305973 - 30
Reference 06372176
Brand: XRAY
"SPRING 4.25 COILS 3.6x6x0.4MM; C=1.5 - GOLD (SOFT) (2) - 372176"
Reference 06373584
Brand: XRAY
SIDE SPRING C=0.6 - SILVER (2) - 373584
Reference 06373587
Brand: XRAY
SIDE SPRING C1.5 - SILVER (MEDIUM) (2) - 373587
Reference 06373588
Brand: XRAY
SIDE SPRING C1.8 - GOLD (MEDIUM) (2) - 373588
Reference 06375784
Brand: XRAY
COMPOSITE GEAR DIFF SPUR GEAR - 84T / 64P - 375784
Reference 06375876
Brand: XRAY
COMPOSITE SPUR GEAR - 76T / 64P - 375876