Ideal Tridon 6L30051 POWR-GEAR CLAMP.

HEAVY DUTY POW’R-GEAR® 6L - Pow’r-Gear clamps are designed for high vibration and stubborn leakage application such as industrial machinery, heavy truck, farm and off-road equipment or engines. Features extra wide 5/8″ band and housing. Delivers high rates of band tension. Material Specifications: Screw: 5/16″ Hex Head; 410 Stainless - Housing: 300 Stainless - Band: 5/8″; 300 Stainless - Installation Torque: 75-90 in-lbs. (8.5-10 Nm) Size: No. 312 Fits Hose with Inner Diameter of: Min (in)= 2-1/4, Max (in)=3-1/8, Min (mm)= 57, Max (mm)= 79.