Two-Speed Adjustment Function: Low Speed Gear: High torque, low speed, suitable for screwing, fastening screws, or working on hard materials like metal to prevent slipping or stripping. High Speed Gear: Low torque, high speed, suitable for quickly drilling into softer or moderately hard materials such as wood, plastic, or tiles. Multi-Mode Switc

In terms of industry standards, the quality evaluation of crystal blocks typically includes multiple aspects such as purity, transparency, color, size, and shape. Crystal blocks with higher purity, better transparency, more uniform color, larger size, and more regular shape generally have higher value. More info about Glass Medal Furthermore,