All have a 5/16-24 UNF thread for mounting,are rated at 12,000 RPM maximum and are 130 grams.

5 inch (127mm) LOW PROFILE

Part Number	Description
2950041	5 in. (127mm) screen vacuum, Hook facing, 49 hole
2950042	5 in. (127mm) screen vacuum, J-Hook facing, 49 hole

6 inch (152mm) LOW PROFILE

Part Number	Description
2960041	6 in. (152mm) screen vacuum, Hook facing, 52 hole
2960042	6 in. (152mm) screen vacuum, J-Hook facing, 52 hole
2964441	6 in. (152mm) screen vacuum, Hook facing, 50 hole
2964442	6 in. (152mm) screen vacuum, J-Hook facing, 50 hole