The Gryphette is the perfect grinder for the occasional glass artist, student or classroom. The very low cost and convenient size will be appreciated by everyone who does not require the features of a larger grinder. The small enclosure houses a surprisingly powerful DC motor. Even when using 1" diamond bits, it is virtually impossible to stall the motor. The Gryphette offers the following features- - Powerful DC Motor. - Standard 3/4" bit. - Accepts all standard bits. - Simple Design. - Outstanding Value. - Optional Face Shield. - Five year limited warranty.