Quick view GRIFF Group 2 Clamp Body Ø 13.5mm (1/2") = 1/4" IPS Plastic block style pipe clamps per DIN 3015, commonly referred to as Beta clamps, Box clamps, or Stauff brand clamps. Clamp body made of polypropylene, and available plates and fasteners are 316 (A4... $1.79 $1.62 Add to Cart Compare