The Proxxon MICROMOT 60/EF (No. 28512) is the quick-action chuck variant of the Proxxon 12V Micromot rotary tool family. It combines built-in electronic variable speed control with a feedback circuit that maintains high torque even at low RPM — preventing the motor from bogging down under load, which is especially useful for carving, engraving, and routing in harder materials. The quick-action chuck accepts multiple shank diameters without collet changes, making it the most convenient option for users who swap bits frequently. The slim, lightweight body (230g, 220mm) and specially balanced low-noise DC motor make it comfortable for extended sessions. Note: An AC adapter of at least 1.0A is required for operation (not included). Recommended adapters: NG 5/E (No. 38704) or NG 2/S (No. 38706). Applications Milling, drilling, and routing Polishing and buffing Cutting and sawing Cleaning, brushing, and de-burring Engraving and scribing Carving (wood, plaster, soft stone) Technical Specifications Part Number: No. 28512 Voltage: 12V DC (low voltage) Max Power: 40W Chuck: Quick-action (accepts multiple shank diameters, no collet changes) Speed control: Built-in electronic with feedback (high torque at low RPM) Length: 220mm (8 21/32") Weight: 230g (1.2 lbs) Power supply: AC adapter required (min. 1.0A, not included) MICROMOT 60 Family — Which Should You Choose? MICROMOT 60 (No. 28500) — 6 collets included, speed via AC adapter; most economical entry point MICROMOT 60/E (No. 28510) — 6 collets, built-in variable speed; best for precision collet work with frequent speed changes MICROMOT 60/EF / No. 28512 (this tool) — quick-action chuck, variable speed with torque feedback; best for frequent bit swaps and carving/routing under load Works Well With AC Adapter NG 5/E with Electronic Speed Control (No. 38704) — recommended adapter AC Adapter NG 2/S (No. 38706) — fixed-speed adapter alternative MICROMOT Extension Cord (No. 28992) — extends reach for all 12V Micromot machines Drill Stand MB 200 (No. 28600) — converts the 60/EF into a stationary drill press Modeler's Set — 13-Piece (No. 28910) — cutting, milling & grinding bits compatible with the quick-action chuck Footswitch FS (No. 38700) — hands-free on/off for two-handed work Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. For warranty claims please call 1-877-776-9966. See our full return and refund policy. California Residents Prop 65 Information WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.