Is 0.9mm the correct Refill for a Parker 51 pencil?

How powerful is the DSR-Precision DSR 50 sniper rifle? What is the value of Stevens no41 single shot pistol? How do you rebuild daisy power line pellet gun? What is the difference between a Stevens Model 620 and a 620-A? What is the price on a sears robuck J.C. Higgins Shotgun? How many Winchester Model 70 heavy-barreled target rifles were produced after 1964 and when did production of these rifle cease? How much does a classic Henry rifle cost? What is the value of a Stevens 22 single shot made in 1925? Model 94 golden spike commemorative 30-30? Where can I buy a rifleman's rifle replica? Are butterfly knives illegal in Georgia? How much a Stevens model 940A 12 gauge breakopen shotgun is worth? What is the value of a tarus the judge handgun? How do you reload a marksman Model 1790 Air Rifle? Astra schematics gun 7.65? What is the year of manufacture of fabrique nationale model 1922 serial 1227? What are the weapons of hwoarang do? What is the value of a Forehand arms Co of Worchester Mass hand gun Dated between 1886-1887? Can you mount a scope on a Winchester 30-30 bolt action? What year is a H and R Model 949 9-shot revolver serial AE11737?

Is 0.9mm the correct Refill for a Parker 51 pencil?