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            | Model | Compatibility | Total  length  | 
Thread  length  | 
Thread  pitch  | 
Weight | 
| BlackLock 12.1 | Shimano E-Thru | 172mm | 18 | M12x1.5 | 29g | 
| BlackLock 12.1 B | Shimano E-Thru Boost | 178mm | 18 | M12x1.5 | 31g | 
| BlackLock 12.2 | Specialized, Syntace X-12 | 161mm | 17 | M12x1 | 29g | 
| BlackLock 12.2 B | Specialized X-12 Boost | 166mm | 17 | M12x1 | 31g | 
| BlackLock 12.3 | Maxle | 176mm | 19 | M12x1.75 | 30g | 
| BlackLock 12.3 B | Maxle "Boost" 182 | 182mm | 20 | M12x1.75 | 30g | 
| BlackLock 12.4 | Scott, etc (not compatible with Santa Cruz) | 168mm | 17 | M12x1 | 29g | 
| BlackLock 12.4 B | Scott Boost, Cannondale F-si 2019 | 172mm | 17 | M12x1 | 29g | 
| BlackLock 12.4 RA | Scott Road pre-2020 | 158mm | 13 | M12x1.5 | 27g | 
| BlackLock 12.4 RB | Giant Road | 163mm | 13 | M12x1.5 | 28g | 
| BlackLock 12.4 RC | Scott Road 2020 | 
168mm | 13 | M12x1.5 | 29g | 
| BlackLock 12.4 RE | Trek Emonda | 
166mm | 19 | M12x1.75 | 28g |