Seam Roller, 40mm Silicone Seam Roller with 6mm Brass Detail Penny Roller, Smoothing Seam Roller Tool for PVC/TPO/EPDM Single Ply Roofing Tape. Durable: 40mm (1.57″ wide) silicone roller with 6mm (0.24″ wide) brass detail roller, anti-corrosion, and resistance temperature up to 500 degrees F.