| Image | Summary | ||||
|---|---|---|---|---|---|
 | BONAITI (D screwlock) | D | manual | nose stopped - rotational interferance | early screwlocker with unique nose-stop mechanism |
 | BONAITI (D) (2200) | D | n/a | n/a | vintage symmetric D with slight nose |
 | BONAITI (D) (2500) | D | n/a | n/a | vintage symmetric D with slight nose |
 | BONAITI (Oval Screwlock) | oval | manual | nose stopped - longitudinal interferance | nose-stopped oval screwlock |