W4 Solid Band hose clamps are used for marine applications and for sealing soft hoses to prevent cutting into hoses as these clamps have a smooth underside and rounded edges.These clamps are all 304SS stainless steel including the screw.Sizes from 8mm to 22mm have a 9mm band width,sizes from 27mm and up have a 12mm wide band.These clamps are a direct replacement for Norma Torro and Ideal- Tridon type clamps.Contact us for a discount code prior to placing a online order or purchasing by phone or email.