Roomba 4XX and 4XXX model side brush screw set
Here's the deal, just send me $3.50 plus $1.50 USPS shipping and I'll ship you a set of 2 screws that will fit your 4th generation Roomba. These screws will NOT fit the 500/600 Roomba side brush. Just paypal $5 to e_vickery@bellsouth.net