【400ML ONLY】This epoxy gun is designed only for 400 mL/13.5 fl oz dual cartridge, double component mix ratio 2:1 or 1:1 both ok, e.g. 08270, 08271, 08272, 08273, 08275 etc. Not for 200ml. Please check your adhesive volume first. 【STURDY & DURABLE】This double cartridge caulking gun is made with heavy duty metal panel, thick pushing plate, heat treated pushing rod and firm trigger. It's study and durable, can meet professionals' demand. 【EASY TO USE】This dual component gun can be used easily, deliver materials smoothly and precisely, no need change from 2:1 to 1:1, maximizing time and cost efficiency for small or space-intensive adhesive applications on individual repair. 【WIDE APPLICATION】This caulking gun can dispense 2 in 1 cartridge of panel bonding adhesive, fillers, structural epoxy, plastic repair epoxy, fiberglass repair material, sound and vibration dampening material. 【CONTACT US】If this caulking gun is not you required, please pack and return in original package. If you meet use or quality problem, please contact us first, we will reply and give you a solution as soon as possible. DAFEIKE Epoxy Gun Dual Component Caulking Gun Manual Double Cartridge Caulk Gun Panel Bond Adhesive Applicator for 400 ml/13.5 fl oz Mix Ratio 1:1 and 2:1 【400ML ONLY】This epoxy gun is designed for 400 mL/13.5 fl oz dual cartridge only, double component mix ratio 2:1 or 1:1 both ok, e.g. 08270, 08271, 08272, 08273, 08275 etc. 【STURDY & DURABLE】This double cartridge caulking gun is made with heavy duty metal panel, thick pushing plate, heat treated pushing rod and firm trigger. It's study and durable, can meet professionals' demand. 【EASY TO USE】This dual component gun can be used easily, deliver materials smoothly and precisely, no need change from 2:1 to 1:1, maximizing time and cost efficiency for small or space-intensive adhesive applications on individual repair. 【WIDE APPLICATION】This caulking gun can dispense 2 in 1 cartridge of panel bonding adhesive, fillers, structural epoxy, plastic repair epoxy, fiberglass repair material, sound and vibration dampening material. 【CONTACT US】If this caulking gun is not you required, please pack and return in original package. If you meet use or quality problem, please contact us first, we will reply and give you a solution as soon as possible.