Robert Sorby RS100KT Midi Multi Tip Hollowing Tool with 3 HSS cutters (2 for Hollowing and 1 for Scraping) Overall Length 16&rdquo; Good for working on smaller projects Overall length of 18" and a shank width of ". Allows access into smaller openings for those making small hollow forms. Midi version has all the same features as the regular version Half-round shank, swivelling washer - but the three tips are finer.