has a raised grinding edge 17 inside the strainer basket 12 is a rotating grinding paddle 18 with bottom recesses 19 and side recesses 20 to match the raised grinding edges 16 and 17 the plug handle 22 goes through the plug handle collar 21 and attaches to the drain plug 23 fig2 is a perspective view of the grinding sink strainer 11 showing the drainage basket 12 with flared rim 13 side drainage holes 15 with grinding edges 17 and bottom drainage holes 14 with grinding edges 16 a rubber or other material reference ring 24 is located under the flared rim 13 to secure the grinding sink strainer 11 properly in a standard recessed sink drain the reference ring 24 or possibly reference pads keeps the strainer basket from slipping in relation to the sink drain so that the grinding paddle 18 can rotate in relation to the strainer basket 12 shown inside the drainage basket 12 is the grinding paddle 18 a collar 21 houses the plug handle 22 and together are the axis that the grinding paddle 18 rotates around a reference pin 25 at the bottom of the plug handle 22 is used to properly seat the drain plug in the sink drain fig3 is a side view of the grinding sink strainer 11 showing the drainage basket 12 with side drainage holes 15 with grinding edges 17 placed under the strainers flared rim 13 is a rubber or other material reference ring 24 this reference ring 24 is for snugly securing the grinding sink strainer 11 in a.