Norma Cable Clips Worm drive hose clamps 631130 - Norma 3627000026, Norma's 3627000026 Worm drive hose clamps have a bundle diameter range from 20 to 32 mm and feature a slotted hex head. These clamps are typically used in securing hoses in automotive and industrial applications. The product is designed for reliable and secure fastening. Norma 3627000026 Worm Drive Hose Clamps Ø 20-32 mm Slotted Hex Head