Pack of 500-Quatro AG055 SPU 1st Stage Pre-Filters Ultrasonics A rare and invaluable resource

A rare and invaluable resource for hand engravers

and stonesetting professionals

Do not exceed the maximum rated RPM of 6

Professionals want to save time during the sharpening process to increase profitable moments spent at the bench

GRS Multi-Purpose Vise Variants Available filled with black pitch or empty Notes

Pack of 500-Quatro AG055 SPU 1st Stage Pre-Filters Ultrasonics A rare and invaluable resourceThe Quatro AG055 SPU 1st Stage Pre Filters are replacement filtration components designed for use in Quatro SPU Stand Up Dust Collectors. Each filter measures 3" x 9" and serves as the first stage of the dust collection filtration process. This listing is sold as a master carton containing 500 filters. Important Note: These filters are no longer compatible with current Quatro SPU units. Quatro has redesigned the SPU line, moving the collection port