TW Complete Clamp for Weld Mounting Consists of: 1 HEX Bolts 1 TCP Cover Plate 1 CLH Clamp Set (2 halves) 1 TWP Weld Plate UT Complete Clamp for Strut Mounting Consists of: 1 HEX Bolts 1 TCP Cover Plate 1 CLH Clamp Set (2 halves) 1 UCN Unistrut Clip R0T Complete Clamp for RAL-0 Mounting Consists of: 1 HEX Bolts 1 TCP Cover Plate 1 CLH Clamp Set (2 halves) 2 RCN-0 Rail Nut R1T R4T Complete Clamp for RAL-1 Mounting Consists of: 1 HEX Bolts 1 TCP Cover Plate 1 CLH Clamp Set (2 halves) 1 RCN-4 Rail Nut TWSK Complete Stacking Kit Consists of: 1 STB Stacking Bolt 1 SAF Safety Plate 1 CLH Clamp Set (2 halves)