CARPLAN / TETROSYL FEW001. CARPLAN FLEXIBLE EXHAUST WRAP IS A TOUGH, STEEL REPAIR FOR SILENCER BOXES WHICH BNDS TO THE EXHAUST SYSTEM, REATING A LONG LASTING, GAS TIGHT REPAIR. CARPLAN FLEXIBLE EXHAUST WRAP IS QUICK AND EASY TO USE AND CAN BE APPLIED TO THE SILENCER BOX IN MINUTES WITH THE AID OF A SCREWDRIVER - WITHOUT THE NEED TO DISMANTLE.