Davies 1900 style knobs available in multiple colors with no minimum quantity! 

These are all 6.4mm (0.25") shaft size with high-quality brass inserts and a set screw - not the cheaper version without the brass insert.

NOTE 1: Tranlucent red looks more pink. 
NOTE 2: Translucent White (Clear) have a factory defect when brass inserts are installed. small fractures in the plastic can be viewed from the side, but do NOT effect the knob's structural integrity. Please be aware we are unable to sort through and find non-fractured knobs. They are being sold AS-IS, no returns. Our manufacturer has offered us no solution to this and they deem them to be acceptable. They've since fixed this problem with all other colors.