Yakamoz 0.3mm - 4mm Adjustable Micro Mini Electric Hand Drill Aluminum Portable Handheld Drill for DIY PCB with 5A DC5V-12V Power Supply Control | 10pcs Micro Drill Bits Included Adjustable electric portable DIY PCB handheld drill, durable and reliable. 0.3mm - 4mm Quick change chuck makes drilling work more convenience Adjustable USA Standard Plug 5A Power Supply with Control (Adjustbale from 5V-12V) Low volume, light weight, easily carry, comfort grip handle. Ideal handheld Drill tool for PCB drilling, wood, plastic, paper, sheet metal, acrylic, Aluminum, etc. (Please Note: It is NOT suitable for heavy metal or high hardness material.)