MINE CARRIER PROVIDING EXTRUSION DRAWING MATERIAL

摘要

The invention relates to a power pen or pencil (100) comprising a main body (3), a head tube (2), a median tube (11) and a ratchet mechanism (12). The ratchet mechanism (12) comprises a projecting resilient portion (11e) and a concave-convex portion (2f). The protruding resilient portion (11e) has elasticity in a radial direction and the concave-convex portion (2f) is disposed on an inner surface of the front tube 2. A projection (11m) disposed on a central tube (11b) is configured for removably engaging a convex annular portion (2g) disposed on an outer surface of the head tube (2) in the axial direction.