Makita 257279-6 — Ring 16 (genuine Makita). A precision-made replacement ring that fits behind the inner flange of Makita 7-1/4" circular saws to support the blade, maintain correct spacing on the 5/8" arbor, and help minimize wobble for cleaner, more accurate cuts. Compatible with many Makita saw models (examples include 5007NK / 5007MGA / 5008MG / 5008MB and similar HS-series saws). Sold individually as an original Makita part for quick, reliable service and fit.