AN hose end wrenches in a durable 7075 material and designed to be long lasting, precision fit without damaging hose end anodized finish. Wrench sizes range from -4 AN through -20AN and come in a durable black anodized finish. This complete set includes 7 Russell AN Hose End Wrenches With Anodized Finish in 4AN, 6AN, 8AN, 10AN, 12AN, 16AN, 20AN sizes.