Stainless steel lined Qwikclamps are two-piece A4 pipe clamps with EPDM lining. Their welded bosses have M8/M10 dual-tapped threads. The 15 variants fit pipe outside diameters from 15-19mm to 159-166mm. Each option has a QLSS product code, a 19 x 1.8mm mat and an M6 x 20mm screw. Box quantities are 50 for the four smallest sizes and 25 for the other eleven.