A pliers includes a first member having a first head and a first handle. The first handle has an enlarged end portion and a grip area adjacent the enlarged end portion. At least a portion of the grip area has a smaller cross-sectional area than the enlarged end portion to define a rear lip located at an interface between the grip area and the enlarged end portion. The pliers also includes a first grip having a first open end and a second open end. The first grip is positioned on the grip area of the first handle. The first handle extends through the first open end and the second open end such that the rear lip of the first handle retains the second grip on the grip area of the first handle.

Methods and apparatus for an enhanced driving bit according to various aspects of the present technology include a bit comprising a plurality of driving surfaces having a limited length and a shoulder portion positioned between the driving surfaces and a mid-body portion of the bit. The length of the driving surfaces is selected to allow complete insertion into a recessed socket area of a fastener such that the entire driving surface is positioned within the recessed socket area. The shoulder surface is configured to distribute localized stresses away from the driving surfaces to the mid-body portion more efficiently to reduce a potential for breakage of the driving surfaces during use.

A method for making folding bicycle tools is disclosed. A semi-finished product is a bar and each distance between two opposite sides of the bar is equal and has two using ends and a working section arranged therebetween. Two transferring sections are respectively arranged between each using end and the working end. A distance Z1 between two sides of the transferring section is less than a distance Y1 between two sides of the working section. Two side surfaces of the working section is flatted to become a flatted surface respectively. Y1 is less than or equal to double of a height X of the working section after being flatted and Z1 is less than or equal to X. The working section is cut to form two finished products and each has an assembling end which provides the an assembling hole to pass through and formed on the corresponding flatted surface.

The various embodiments disclosed and pictured illustrate a hammer for comminuting various materials. The embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The hammer includes a connector end having a rod hole therein, a contact end for delivery of energy to the material to be comminuted, and a neck affixing the connector end to the contact end. The neck is formed with at least one neck recess therein. In other embodiments, one or more shoulders are positioned around the periphery of the rod hole for added strength. In still other embodiments, the contact end is configured with more than one contact surface.

The various embodiments disclosed and pictured illustrate a hammer for comminuting various materials. The embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The hammer includes a connector end having a rod hole therein, a contact end for delivery of energy to the material to be comminuted, and a neck affixing the connector end to the contact end. The neck is formed with at least one neck recess therein. In other embodiments, one or more shoulders are positioned around the periphery of the rod hole for added strength. In still other embodiments, the contact end is configured with more than one contact surface.

Provided is a method of manufacturing a vibration transmission member for an ultrasonic treatment tool. The method includes: applying a release agent between a surface of a vibration transmission member configured to transmit ultrasonic vibration and a die for hot forging; performing hot forging to form the vibration transmission member after the applying of the release agent; removing, after the performing of the hot forging, a part of an oxide film formed in the performing of the hot forging by a first surface treatment; performing pickling to remove the oxide film after the removing of the part of the oxide film by a blasting treatment; and performing coating with a resin after the performing of the pickling.

Provided is a method of manufacturing a vibration transmission member for an ultrasonic treatment tool. The method includes: applying a release agent between a surface of a vibration transmission member configured to transmit ultrasonic vibration and a die for hot forging; performing hot forging to form the vibration transmission member after the applying of the release agent; removing, after the performing of the hot forging, a part of an oxide film formed in the performing of the hot forging by a first surface treatment; performing pickling to remove the oxide film after the removing of the part of the oxide film by a blasting treatment; and performing coating with a resin after the performing of the pickling.