5/16-18 x 1-1/2" Black Phenolic Knurled Knob - 1-3/8" head diameter.
A: 1-3/8, B: 13/32, C: 3/8, D: 3/4
Knurled bands for sure, non-slip fingertip control.
Used for light-to-moderate torque applications.
Note: We ship to the address provided and bear
no responsibility for the shipment once it leaves our building.