Smooth-On REBOUND 25 - 1 CASE 4 KITS 1 Gallon Total Silicone Rebound 25 Brush On Silicone captures perfect detail 1 CASE 4 KITS- 1 Gallon Total Silicone Self-Thickening Brushable mold making silicone For vertical surfaces. 15+ year library life of cured silicone . Suggested mold release : Mann Release Technologies / Ease Release 200