Roetin Polaris Performance X-10 Two 6" Carbide Runners Wear Rods, 2875723, 200-250 Dragon Roetin Industries Performance X-10 Two Carbide Wear Rods part # X10-2-250 for Polaris snowmobiles Six inches of 90?? carbide on 1/2 in. bar; Two carbide wear pads; 5/16" stud Note: some models require drilling additional hole in ski to mount carbides