On the basis of V2, we continue to use the shape of the V4 tamper compactor. In addition, Comes with a pack of both 0.3mm and 0.4mm needles, for a total of 9 holes. Needles can be easily loaded/unloaded to your liking at any time.SPECIFICATIONS:Main Body Material: Anodized Aluminum CNC;Needles Material: 304 Stainless Steel;Internal axis: ABSTotal Length: 103mm;Diameter: 31mm;Wire Length: 50mmTHE SET INCLUDES:1 - WDT Distribution Tool V39 - 0.25mm custom needles9 - 0.3mm custom needles1 - WDT Stand