 Item number, SCP-585, Object Class, Safe. Special Containment Procedures, SCP-585-2-4 are to be kept in a standard hazardous object containment at Site-19. Pencils modified by SCP-585 are extremely hazardous and should be returned to their normal state at the end of testing. As of Incident 585-1, no pencil should be sharpened for more than 50 rotations without 05-level approval. SCP-585-A is stored in a glass vacuum flask, which is locked in storage vault, special authorization by Dr. Pruitt or any Senior Foundation staff is required for experiments involving SCP-585-A. Description, SCP-585-2-4 small two-hole pencil sharpeners made of brightly colored plastic. The factory is printed in slightly raised text on the undersides. Any pencil inserted into the small hole of SCP-585 and turned clockwise will be sharpened as is normal for a pencil sharpener. However, with each rotation, the sharpness of the pencil's point continues to increase without any apparent limit. Any pencil sharpened by SCP-585's small hole that is then inserted into the larger hole and turned counterclockwise is unsharpened, with each rotation undoing the effect of one previous rotation in the small hole. Only the shape of the pencil has changed. Lost mass from shavings is not restored. The tip of affected pencils can be broken off, but the point will retain its sharpness and remain dangerous. Preliminary testing indicates that never sharpened, flat pencils reach the normal maximum sharpness a sharpener can achieve after 20 rotations. From this point on, SCP-585 will shave exponentially less mass off of the pencil with each rotation. At 30 rotations, a pencil dropped from 1 meter embedded itself by 10 centimeters into a solid steel bar. SCP-585 works best on thin cylinders of wood, cored with graphite. SCP-585 will also function with other easily shavable materials, such as plastic or paper cored with graphite or with a pure graphite stick. Pure wood or plastic does not produce the effect, nor does any material that cannot be shaved by an ordinary pencil sharpener. SCP-585 1-4 were recovered from an elementary school in after data expunged. Incident 585-1, a standard HP pencil, never used, was chosen for extended testing of SCP-585-1. Pencil is now designated SCP-585-A. After 20 clockwise rotations in the small hole of SCP-585, SCP-585-A was applied to a sheet of paper, functioned as a normal pencil. After 30 rotations, SCP-585-A was confirmed capable of piercing steel. A sheet of paper was sliced in half by the point. After 40 rotations, SCP-585-A was attached to a string and dropped from 1 meter height onto bedrock. SCP-585-A penetrated 0.5 meters. After 50 rotations, the same test as above was performed. SCP-585-A penetrated 5 meters of bedrock. After 60 rotations, SCP-585-A penetrated 50 meters of bedrock. Testing continued until at exactly 100 rotations. SCP-585-A's tip began radiating extreme heat, causing its wooden component to burst into flames. Further testing on the graphite core, data expunged. The item was deemed too high of a risk to keep, considering that another could be easily created, and SCP-585-A was inserted into the large hole of SCP-585-1. The extreme heat caused SCP-585-1 to melt. SCP-585-A placed in a vacuum flask for storage. Lesson complete. If you missed the previous orientation, go watch SCP-584. Many fingers. Many toes. Right now. Or for the complete course. Watch this playlist.