its: Para Ordnance Grip Screws
These are specifically sized and fit perfectly unlike our competitors, these will not make your screws stick out too far and if one is not enough then you can use two under each screw to accommodate thicker grips
O-rings Help keep Grip Screws Tight.
We suggest you purchase at least eight (8) grip screw O-rings for every set of Grips. We cannot offer free shipping on these due to the already low cost of the item ,However if you purchase any set of our grips with these you'll get free shipping.