New Production Stainless Sks Bore Brush 7.62×39mm, 3 Pack. This Sks Cleaning Rod Bore Brush is 3" long. Accept the Sks cleaning rods found in the Sks rifle. Note: If you need a SKS cleaning rod, we do have them for sale. This Stainless Sks Bore Brush is for heavy lead fouled or rusted bores or just quicker cleaning of your Sks rifle.