Offers enhanced grip and comfort for detailed applications Provides optimal tool control when precision is required Attaches onto rotary tools in place of its nose piece for quick and easy installation Compatible with Dremel Rotary Tool models: 4300, 4000, 3000, 200, 100, 8250, 8240, 8220, Repositions the weight of the tool into the palm of your hand for a balanced feel and less fatigue Ideal for precise work during engraving, carving and more