type F worm - drive clamps are precision engineered to provide reliable, long - lasting performance under most standard household, automotive and industrial applications. These versatile, all - purpose clamps feature. [6 - 12mm] bands with a clamping range from 0.24 inches to 0.47 inches.(6mm - 12mm). [10 - 16mm] bands with a clamping range from 0.39 inches to 0.63 inches.(10mm - 16mm). [13 - 19mm] bands with a clamping range from 0.51 inches to 0.75 inches.(13mm - 19mm) [16 - 25mm] bands with a clamping range from 0.63 inches to 0.98 inches.(16mm - 25mm). [34 inch] bands with a clamping range from 12 inches to 1 inches.(14mm - 27mm). [1 - 12 inch] bands with a clamping range from 1 inches to 2 inches.(27mm - 51mm). [2 inch] bands with a clamping range from 1 - 23 inches to 2 - 12 inches.(40mm - 63mm). [3 inch] bands with a clamping range from 2 - 13 inches to 3 - 15 inches.(59mm - 82mm). [4 inch] bands with a clamping range from 3 - 14 inches to 4 - 14 inches.(84mm - 108mm). [5 inch] bands with a clamping range from 4 - 23 inches to 5 - 12 inches.(118mm - 140mm). constructed of SS304 series stainless steel for maximum corrosion resistance to salt and most chemicals. The housing and 516 - inch flat head screws are both produced with plated carbon steel for high - strength performance under tension. All clamps are manufactured to meet or exceed SAE standard J1508. This pack includes 51020 pieces hose clamps.