Stainless steel shaft and a 6061 aluminum round head with "finger" grooves that allow you to spin the filter bolt on and off with ease. Shaft features a tapered lead-in with precise threads for increased durability. Sold individually. Note: Kawasaki KXF 450 / 250 (Standard), 2016 KXF 450 (Powerflow Kit), Suzuki RM 125 / 250 RMZ 250 / 450 (standard and PowerFlow Kit), Yamaha YZ 125 / 250 YZF 250 / 450 (standard and PowerFlow Kit).