無鑰匙鑽夾，1/8"（3 mm）

The 0.002" max runout is spot on—my drill bits spin true for precise hole placement, and the hardened tool steel body has held up through a full cabinet project without any play. I just wish it came with a wrench adapter for stubborn bits, but the keyless grip is solid enough that I haven't needed o

My old chuck wobbled so badly I was snapping 1mm bits left and right, but this one's 0.002" runout is a game changer for my tiny drill work. Mounted right up to the spindle without any fuss, and the hardened tool steel feels like it'll outlast every project I throw at it.

The runout spec of 0.002" really impressed me when I checked it with a dial indicator, it holds tiny bits dead true. I've been using it on my small mill for delicate engraving work, and the hardened steel construction feels like it will last a long time. The 3 mm capacity is perfect for these precis