Buy from our range of high-quality Aluminium Tri truss. A 290mm truss is used for DJ / band lighting trusses or small to medium shows where roof height or sight lines are an issue. Using snug-fitting Conical Spigots, Pins and R-Clips, the connection systems eliminates the need for bolts & nuts, saving a lot of valuable time during set-up. Most trusses comes fitted with conical couplers, spigots and safety pins for joining more pieces of truss.