Does anyone know where to get the "bit" that accepts the grinding discs that have velcro on the back? I can find the ones for a 4.5" angle grinder but not the smaller ones for a die grinder.

Use rol locs

Not speciffically what you asked about, but, these may do the trick for you. This is what I use for my 1/4" grinders.

http://www.heleta.com/abrasive-products/roloc-type-sanding-discs/sc253060/

LB

Thanks fellas but I need the other style. I already have some of that style. I purchased a bag full of 100 of the velcro style discs for $5 thinking I would juss buy the backing pad that fits them but these suckers are harder to find than I imagined.

http://www.grainger.com/Grainger/items/4ZR15?BaseItem=4ZR19

http://images.grainger.com/B303_45/images/products/250x250/4ZR54_AS01.JPG

Thanks!!!

No problem, that's a link for the 3 inch but they have other sizes also.