The dremel 4000 6128 multi tool kit has an increased strength of its motor plus electronic feedback circuitry enables consistent performance at all speed levels dremel39s 4000 can use all existing dremel accessories and attachments plus high performance attachments to complete the widest range of projects whilst the slim ergonomic body provides a 360 degree grip zone for comfort and control in any grip position attachments detailer39s grip attachment 577 line amp circle cutter a