Compare OO 20/ 21 ton grain hopper
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| Manufacturer | Hornby Dublo | Tri-ang | Hornby Dublo | Hornby Dublo | Bachmann Branchline | 
| Year model introduced | 1958 | 1958 | 1973 | 1993 | 2013 | 
| DCC Capability | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | 
| Detailing | |||||
| Bodyshell - factory-fitted separate details | |||||
| Body ladders | Yes | No | Yes | No | Yes | 
| Roof piping | No | No | No | No | Yes | 
| Roof railing | No | No | No | No | Yes | 
| Chassis/underframe detail | |||||
| Brake rigging chassis | Yes | No | Yes | No | Yes | 
| Wheel "aesthetics" | |||||
| Nickel-plated | No | No | No | No | Yes | 
| Bufferbeam detail (pre-fitted) | |||||
| Cosmetic coupling - hook only | No | No | No | No | Yes | 
| Mechanical | |||||
| Chassis construction | Diecast | No | Diecast | No | Lightweight | 
| Minimum radius | Radius 1 | No | Radius 1 | No | No | 
| Coupling socket/mounting | |||||
| Fixed | Yes | No | Yes | No | No | 
| NEM pockets | No | No | No | No | Yes | 
| Coupling type | Peco style | No | Peco style | No | Tension lock | 
| Items in Stock | View | View | View | View | View |