300 Stainless Steel Worm Drive Mini ClipMeets or Exceeds SAE J 1508 Type M1/4" Hex Head Slotted Screw5/16" Wide Perforated BandThis American Style Mini clips materialsW4: All made of AISI 300 Series Stainless SteelW2: Band & Housing made of AISI 201/ 301/ 304 SS; Screw made of Zinc-Plated SteelSizes for Miniature worm drive clamps belowInches (Inch)                      Metric (mm)WDMNC8004      7/32 to 5/8                            6- 16WDMNC8006      7/16 to 3/4                          10-19WDMNC8008      5/16 to 7/8                            8- 22WDMNC8009      7/16 to 1                              11-25WDMNC8010      1/2 to 1-1/16                        13-27WDMNC8012      9/16 to 1-1/4                        14-32WDMNC8016      11/16 to 1-1/2                      17-38 WDMNC8020      7/8 to 1-3/4                          21-44