The stock knob is hard to get tight enough to securely lock the fence in place. Our knob can be tightened much more easily and raised up off the work surface so it's out of the way of material. Especially handy if your grip is not what it was when you were 20. All the hard to find hardware required for this conversion is included. SKU Number: RRCDTSRFKK
 "Dremel Table Saw Rip Fence Knob Kit")