The 176H123-12A (H123) is a 10% H 29mm 4-grain reloadable composite motor from Cesaroni Technology Incorporated (CTI).
This motor uses an E-Match igniter.
This reload fits a Pro29-4G motor case.
CTI's Skidmark propellant produces a yellow flame, black smoke, and yellow sparks. Like other "sparky" motors, it is also loud.
| Average Thrust: | 114.9900 N | 
| Casing: | Pro29-4G | 
| Class: | 10% H | 
| Delays: | 3,5,7,9,12 seconds | 
| Designation: | 176H123-12A | 
| Diameter: | 29.0000 mm | 
| Formula: | Skidmark | 
| Igniter: | E-Match | 
| Length: | 231.0000 mm | 
| Letter: | H | 
| Manufacturer: | CTI | 
| Name: | H123 | 
| Peak Thrust: | 145.0000 N | 
| Propellant: | APCP | 
| Status: | Unknown | 
| Thrust Duration: | 1.5300 s | 
| Total Impulse: | 175.9350 Ns | 
| Total Weight: | 228.0000 g | 
| Type: | Reloadable | 
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