EDTW (MicroPITCH Fine Pole Design) Fine pole design provides best holding power for sur-face grinding of small or thin workpieces. • Brass welded faceplate can be machined if needed, and protects the magnetic system from penetration of coolant. • Needs no electricity. Provides a constant source of workholding power. • Low-profile design increases Z-axis stroke • Housing and bottom plate are free of magnetism - will not magnetize machine bed or bearings.