You can switch tools in 3 seconds by pulling the tool with attached standard quick change holder out of a QC hand piece or QC manual handle and inserting another. Standard quick change holders accept square tools up to 2.5mm, round tools up to 3.3mm diameter, and QC gravers.The item "GRS Tools QC Tool Holder for 1/8 Round Tool package of 10" is in sale since Sunday, March 27, 2016. This item is in the category "Jewelry & Watches\Jewelry Design & Repair\Jewelry Tools\Engraving Tools". The seller is "kraftj74" and is located in Wichita, Kansas. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, PH, SG, NO, SA, UA, AE, QA, KW, BH, HR, MY.