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

 1-1/4 inch (32mm) 

Part Number	Description	Click Image
2911400	1-1/4 in. (32mm) non-vacuum, PSA facing, 1/4-20 thread
2911401	1-1/4 in. (32mm) non-vacuum, Hook facing, 1/4-20 thread

 3 inch (77mm) Straight Edge 

Part Number	Description	Click Image
2931200	3 in. (77mm)  straight edge, non-vacuum, PSA facing, 80 gram
2931201	3 in. (77mm)  straight edge, non-vacuum, Hook facing, 80 gram
2931202	3 in. (77mm)  straight edge, non-vacuum,   J-Hook facing, 80 gram

 3 inch (77mm) Low Profile

Part Number	Description	Click Image
2932000	3 in. (77mm)  low profile, non-vacuum, PSA facing, 1/4-20 thread, 30 grams
2932001	3 in. (77mm)  low profile, non-vacuum, Hook facing, 1/4-20 thread, 30 grams
2932002	3 in. (77mm)  low profile, non-vacuum, J-Hook facing, 1/4-20 thread, 30 grams
2932010	3 in. (77mm)  low profile, 3 hole vacuum, PSA facing, 1/4-20 thread, 30 grams
2932011	3 in. (77mm)  low profile, 3 hole vacuum, Hook facing, 1/4-20 thread, 30 grams
2932012	3 in. (77mm)  low profile, 3 hole vacuum, J-Hook facing, 1/4-20 thread, 30 grams

 3.5 inch (77mm) Low Profile

Part Number	Description	Click Image
2930000	3.5 in. (77mm)  low profile, non-vacuum, PSA facing, 80 grams
2930001	3.5 in. (77mm)  low profile, non-vacuum, Hook facing, 80 grams
2930002	3.5 in. (77mm)  low profile, non-vacuum, J-Hook facing, 80 grams