what they are. . . nothing spectacular but they keep my hinges from bouncing on the portable frame. While it's more convenient to use the ring to move around the shaft perpendicular to the shaft (e.g. to keep the wheel on the axle), like me they can be used with the ring in line with the shaft.
🔩 M6 1.0 Stainless Steel Flanged Hexagon Flange
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POWERTEC 4 Inch 20 2 Inch QTB1005 T Slot: A Revolutionary, High-Quality Power Tool Accessory!
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