Ideal Tridon 62P2051 MICRO GEAR 5/16 SIZE 20.

WORM GEAR MICRO-GEAR® 62P - Micro-Gear 62P clamps are tiny, tough and precision engineered for use in small hose applications. Their slim 5/16″ band and low profile housing make them easy to install in confined areas. Part stainless steel. Material Specifications: Screw: 1/4″ Hex Head; Plated Carbon Steel - Housing: 300 Stainless - Band: 5/16″; 300 Stainless - Installation Torque: 10 to 15 in-lbs (1.1 to 1.7 Nm) Size: No. 20 Fits Hose with Inner Diameter of: Min (in)= 3/4, Max (in)=1-3/4, Min (mm)= 19, Max (mm)= 44.