Products & Services Miscellaneous   Parting off tools Tapping attachments Inserts are manufactured in cobalt alloyed High Speed Steel Dormer has a wide range of tapping attachments for use with its comprehensive ranges of taps Countersinks/Counterbores Hacksaw Blades Countersinks are used for deburring and/or counterboring existing holes in most materials... The blades are designed for long lasting performance in a multitude of cutting conditions