Description: Jaws for Universal Mask chuck for square sizes - Step chuck
(Ultra Tech, Ultra T, K & S)
Jaws, Stepped chuck * 4ea mask size for 3.0", 4.0", 5.0" and 6.0" or 6.0", 7.0", 8.0" and 9.0" (same Jaws for both size groups) You just need the larger round plate.
Plate size: Base Plate for 3", 4", 5" & 6" masks (8.67 dia. round) Base Plate for 6", 7", 8" & 9" masks (12.83 dia. round)
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