20-32mm Hose Clamp | Forge Motorsport This a high performance hose clip, with a cold-formed stamped band thread, smoothed on the underside, combined with the bevelled band edges protects the hose from any damage. Manufactured in its entirety in AISI-430 stainless steel, the ASFA-S W3 is a very attractive clip which complies fully with the DIN 3017 norm and also with the RoHs directive EU 2002/95/EC dated 1st July 2006. It is especially recommended for use in automotive, agricultural and fluid transfer applications