3 pcs wok ring set: 2 pcs type A and 1 pc type B. This wok ring features non-sharp edges on both ends and is ideal for use with round-bottom woks. Universal fit for gas stoves and fry pans. For round-bottom woks, select a wok ring with an outer diameter smaller than the wok’s base diameter. Durable construction with perforated sides and a flat, stable rim. Designed to support woks on standard stovetops. Place the ring with the narrower side down when using on small electric burners. Efficient heat transfer—heat rises and cools quickly, mimicking gas stove performance. Fully covers heating coils to maximize energy efficiency. Precise fit around coil elements. Flat-bottom woks sit close to the heat source for optimal heat absorption. Controlled spacing ensures even heat distribution and prevents burning. Compact design minimizes movement between flat-bottom woks and flat coils. Features grooves on the bottom to prevent sliding. Compatible with stove grates that have four prongs arranged at 90-degree intervals. Stabilizes woks securely to prevent tipping. Fits stoves with cross-style (perpendicular) grates. Works with various cookware—including round-bottom woks, flat-bottom woks, and pots—with base diameters over 3.94 inches (10 cm). Color: Black Material: Cast iron + stainless steel Outer diameter: 21.5 cm Dimensions: 21.5 x 24.5 cm Package includes: 3 x wok rings Note: Actual color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.