COLLIS TOOL NMTB50 Rotary Tool Holder Quick Change Master Hold. Nose Diameter (Decimal Inch). Rotary tool appears to be in good condition. Has some minor blemishes from previous use. Comes as shown in photos, please review them all carefully. Please review photos, comes as shown. Everyone Can help – Industry Recycles. 155 Center Ct, Venice, FL 34285. Rack Bobo Shelf 4.