Fits 4-1/8 to 7 inch (105 to 178 millimeter) hose diametersSecures with 8 millimeter hex nut t-bolt or flathead screwdriver1/2 inch wide bandsHeavy-duty stainless steel constructionAEM hose clamps are designed to secure coupler connections to air intake tubes with a t-bolt. This hose clamp kit contains 6 stainless steel hose clamps.