Spiral Hand and Push Drill Extra Collet Drilling Tools Beading Wire Twisting piral Drill: It has 2 collets. This holds twist drills sizes: 1 to 2 mm. To use just push down and the spring inside twists the drill. It measures approximately 7" (177 mm) long Wire Twisting Tool: Great for drilling into wood, soft metal and plastics. Uses a hand operated crank handle to turn interlocking gears which rotates the drill bit. Useful when a small number of holes are required. Holds 0-1 mm bits. It measures approximately 4 5/8" (117.5 mm) long