Abstract: A pencil sharpener having a support and a main blade adapted to dispose and secure onto the support is disclosed which comprises an auxiliary blade adapted to dispose onto the support and secure thereonto by a screw and a corresponding nut. The auxiliary blade is further adapted to dispose on one side of the support opposite to the side where the main blade is disposed.

Abstract: The present invention provides an optical fiber connector adapted for connecting an optical fiber carried in the optical fiber connector to an optical cable, which comprises a plug, a ferrule assembly mounted in the plug, a retention member engaged with the plug, and having a first end and a second end, a resilient element mounted between the ferrule assembly and the retention member, a crimp member having a third end and a fourth end engaging with the second end, an extension member connecting thereto the optical cable, attached to the crimp member at the crimp member at the third end and having an entrance end, and an adjuster mounted between the second end and the fourth end for adjusting an engaging extent therebetween.