Ideal Tridon 670040128052 1/2IN MARINE GRADE ALL 300 SS SIZE 128.

WORM GEAR 1/2″ HY-GEAR® 67-4 - 1/2″ Hy-Gear 67-4 is an IAPMO listed all 300 grade stainless steel clamp designed for greater resistance to corrosion. Featuring the UPC shield, it is commonly used in plumbing and underground applications where corrosion resistance is important. NOTE: For commercial shipping, extra strenuous or more extreme corrosion resistance application needs, the all 316 stainless steel 1/2″ Hy-Gear 67-6 is recommended. Material Specifications: Screw: 5/16″ Hex Head; 300 Stainless - UPC Shield: 300 Stainless - Band: 1/2″; 300 Stainless - Installation Torque: 35 in-lbs (4 Nm) Size: No. 128 Fits Hose with Inner Diameter of: Min (in)= 6-1/2, Max (in)=8-1/2, Min (mm)= 165, Max (mm)= 216.