The Bergeon 8935-1 Watch Hand Setting Tool simplifies precise hand fitting for both wrist and pocket watches. Featuring five clear synthetic tips (0.60mm, 1.20mm, 1.60mm, 1.60mm flat, and 2.60mm flat), it allows accurate alignment by letting you see the pinion during installation. The anodized aluminum body ensures durability, while the plunger and spring mechanism facilitate smooth hand pressing. Quick-change tips and compatibility with Bergeon 7100 series movement holders (31mm base) make this tool essential for expert watchmakers seeking efficiency and precision.